Lepro Bayonet Smart Bulb B22 Review: cheap smart bulbs that cover the basics (and a bit more)

I’ve been using this 4‑pack of Lepro B22 smart bulbs for a little while now across a small UK flat: living room ceiling, bedroom lamp, and a spare in a hallway fitting. I bought them mainly because I didn’t feel like paying Philips Hue prices and I wanted something that works with Alexa without needing a separate hub. So this is very much a budget, plug‑and‑play setup, not some fancy home automation project.

In daily use, the headline is simple: they do what they say on the tin. They turn on, they dim, they change colour, and Alexa can boss them around. I’ve had more trouble in the past with other cheap brands constantly dropping off Wi‑Fi or refusing to pair; these have been a lot less annoying so far. Not perfect, but good enough that I’m not swearing at them every evening.

I’ve mostly used them for three things: normal warm white light in the evenings, bright cool white for working at home, and coloured scenes for films or music. No fancy smart home routines beyond a couple of basic timers and an Alexa routine that turns a few on at sunset when I’m out. So this is coming from a normal user point of view, not someone trying to automate every second of their life.

If you’re wondering whether these are a solid cheap option versus big names like Hue or Lifx: in my opinion, they’re decent value but not flawless. App is a bit clunky, colours aren’t as punchy as premium stuff, and the whole AI / music sync gimmick is more toy than serious feature. But for basic smart lighting in a rental or small house, they get the job done with fewer compromises than I expected at this price.

For me, the main reason to buy these over Philips Hue or similar is price. A 4‑pack of Lepro B22 smart bulbs usually costs less than two equivalent Hue bulbs plus a hub. You’re trading some polish and ecosystem strength for raw value. If you just want basic smart control, colour options, and timers without blowing the budget, they’re hard to ignore.

Where you do feel the lower price is in the software and refinement. The app feels more budget, the fancy AI and music features are more gimmick than serious tool, and colour quality is a notch below the big brands. Also, these are Wi‑Fi bulbs, so if you fill your house with them you’re adding a bunch of devices to your network, which some routers don’t love. A dedicated hub system like Hue handles that better, but again, that’s more money.

In terms of running costs, 8.5W for the brightness you get is pretty efficient. If you’re replacing old 60W incandescent bulbs, you’ll definitely save on energy over time. Whether that justifies paying extra for smart vs. plain LED is another story, but at least these aren’t power hogs. If you’re conscious about energy use, they’re fine – just ignore the slightly depressing EU F label, which is more about the new rating scale than them being truly wasteful.

So overall, I’d call the value good but not mind‑blowing. You’re getting a lot of features for the money: RGB, tunable white, Alexa/Google support, timers, and app control. The rough edges (average app, so‑so effects, occasional quirk with voice commands) are the price you pay for the lower cost. If you want something more polished and rock‑solid, you’ll need to spend more. If you’re okay with "pretty solid for the money" and a few compromises, this 4‑pack is a sensible buy.

Design‑wise, these are about as plain as it gets. White plastic body, standard bulb shape, bayonet base. If you’re expecting something that looks premium or special in a clear pendant light, you’ll probably be underwhelmed. In regular lampshades and ceiling fittings, they just disappear, which is fine by me. I don’t need my bulbs to be pretty.

The bulb is slightly bulkier than a cheap non‑smart LED, but still fits all the fixtures I tried: a small IKEA bedside lamp, a shallow hallway ceiling fitting, and a simple living room pendant. No overheating issues so far; after being on for a few hours they’re warm to the touch but not worrying. Beam angle is wide (they state 270°), and in practice that means they spread light quite evenly, not a narrow spotlight effect.

The only minor design annoyance is the all‑plastic feel. Compared to something like Philips Hue, which feels a bit more solid and glassy, these feel cheaper in the hand. Once they’re installed, you don’t notice, but during installation it does remind you that you bought a budget pack. Also, there’s the usual tiny printed text on the side with specs, which you won’t care about after the first day.

From a usability angle, the simple design is actually a plus. No weird shapes, no oversized base, nothing that blocks lampshades or looks odd. For a normal UK home with B22 fittings, they’re basically drop‑in replacements. So while they’re not going to impress anyone on looks alone, they’re practical and neutral, and that’s probably what most people want in a bulb anyway.

I obviously haven’t hit the claimed 15,000‑hour lifespan, but I can talk about early impressions. I’ve had three of the four bulbs running daily for a few weeks, usually 4–6 hours per day. No visible dimming, no random reboots, and no flicker so far. They warm up but don’t get dangerously hot, which is what you’d expect from an 8.5W LED. They feel like typical budget LEDs in terms of build – not premium, but not like they’re about to fall apart either.

The all‑plastic shell is a bit of a double‑edged sword. On one hand, it helps keep weight down and probably reduces the chance of shattering if you drop one. On the other hand, it doesn’t give that solid, long‑lasting impression you get from some higher‑end bulbs with more metal or glass. When you screw them in and out they flex a tiny bit if you grip too hard near the body, so I just handle them gently by the base.

On the reliability side, the Wi‑Fi connection has been mostly stable. I had one moment where my router rebooted and one bulb didn’t reconnect properly until I power‑cycled it at the switch. Not the end of the world, but something to keep in mind if your Wi‑Fi is already flaky. Compared to some random no‑name smart bulbs I tried a couple of years ago (which constantly dropped offline), these feel more stable overall.

Long term, I don’t fully trust the 15,000‑hour number – I’ve rarely seen any cheap LED actually reach their full claimed life. But at this price for a 4‑pack, even if they last a few years of regular use, I’d say that’s acceptable. If you want something to install and forget for a decade, I’d still lean toward a more established eco‑system. If you just want affordable smart bulbs that seem reasonably put‑together and don’t feel like total junk, these are okay.

In terms of brightness, the 806 lumens claim feels about right. In my living room, a single bulb on cool white at 100% is bright enough for reading or working on a laptop. In the bedroom, I rarely go above 60–70% in warm white because it’s already plenty. Where you do see a drop is on some of the deeper colours – reds, pinks, and oranges are definitely dimmer than white. That’s pretty common on cheaper RGB bulbs, but worth knowing if you want intense red or purple lighting.

The white temperature range (2700K–5700K) is actually one of the strong points. Warm white looks cosy and not too yellow, and cool white is good for daytime or working without feeling like a hospital. I’ve used warm white in the evening and then switched to cooler white when working at the table, and it makes a noticeable difference to how awake I feel. Dimming also works fairly smoothly through the app and Alexa, with no flicker that I’ve noticed.

On the colour side, you get the usual 16‑million‑colours marketing line. In practice, you’ll mostly use a handful: blues, purples, greens and some softer pastels. They’re decent for mood lighting, but they’re not as rich or accurate as something like Hue. Some colours look a bit washed out at full brightness, so I tend to keep them slightly dimmed for a nicer look. The pre‑set scenes in the app are a bit tacky (lots of fast colour jumps), but you can dial in your own static colours easily enough.

Latency and reliability have been mostly fine. Commands through Alexa usually apply in under a second. Occasionally one bulb in a group lags or ignores a colour change, but hitting the command again fixes it. I’ve had maybe one or two brief dropouts in a couple of weeks, which is tolerable. For a budget smart bulb, I’d call the performance pretty solid but not flawless. If you’re extremely picky about perfect colour rendering or instant, never‑ever‑fails responses, you’ll want a pricier system. For normal home use, these are good enough.

In the box you get four B22 bayonet bulbs and a basic paper manual. That’s it. No remote, no hub, no extra bits. The bulbs are standard A19 size, so they fit all my existing UK bayonet fittings without any drama. They’re rated at 8.5W (roughly 60W equivalent) and 806 lumens, which in practice is enough to light a small‑to‑medium room on their own if you use the white modes at full brightness.

Each bulb is Wi‑Fi (2.4 GHz) and Bluetooth. The Bluetooth bit is handy for setup and for people whose routers are a bit flaky, but day‑to‑day you’re basically using Wi‑Fi through the Lepro app or your smart assistant. No hub needed, which is one of the big reasons I tried these instead of going back to Hue. Just screw in, open the app, pair, and then link to Alexa or Google.

Feature‑wise, they tick most of the usual smart bulb boxes: tunable white (2700K warm to 5700K cool), full RGB colour, dimming, scenes, timers, schedules, and a music‑sync mode. There’s also this whole ‘AI lighting effects’ thing in the app where you type a prompt or add an image and it generates colour patterns. In reality, it’s just auto‑generated flashing/cycling scenes that all feel a bit similar and a bit harsh on the eyes.

Day to day, the core experience is simple: you open the app or talk to Alexa, and the lights change colour/brightness fairly quickly. There’s a tiny delay but nothing crazy. I’ve had a couple of rare moments where one bulb didn’t respond to a group command and I had to tap it again in the app, but it’s not a constant headache. For a budget set, they feel more like a normal part of the house and less like a tech experiment, which is honestly all I wanted.

The Lepro app is where things are a bit mixed. Setup was fairly quick for me: screw in the bulb, power on/off a couple of times to get it blinking, then follow the in‑app steps. It found the bulbs via Bluetooth and then put them on Wi‑Fi. I did have to make sure my phone was on the 2.4 GHz band; if your router merges 2.4 and 5 GHz under one name, you might have to fiddle a bit. Once connected, though, the bulbs stayed online most of the time.

Day‑to‑day app control is fine but not polished. The main screen lets you change brightness, colour, or switch between white and colour modes. It works, but the interface feels a bit cluttered and some options are buried. The effects and AI features are honestly underwhelming: you pick an effect or type a prompt, and the bulb cycles or flashes through colours. There’s not much smooth fading, and a lot of it ends up being hard on the eyes. Fun for 5 minutes at a party, then you probably won’t touch it again.

Where these bulbs are more useful is with voice control. I paired them with Alexa and that’s how I control them 90% of the time. Commands like “turn bedroom light on”, “set living room to 30 percent”, or “set bedroom light to warm white” generally work. Colour commands are a bit hit‑and‑miss sometimes (“set to teal” or more specific shades), but basic colours like red, blue, green, purple are fine. One quirk I hit: sometimes using the word “brightness” in my command confused Alexa, so I just say “set bedroom light to 20 percent” instead, which works.

Timers and schedules are simple but useful. I set a couple of lights to turn on around sunset when I’m usually home, and another to come on randomly when I’m away so the place doesn’t look empty. They’ve triggered reliably so far. The music sync feature is basically a microphone‑based colour flasher: it reacts to sound but not in a very intelligent way. For serious ambience it’s a bit much, and I can see it being uncomfortable if you’re sensitive to flashing lights. Overall, the smart side is functional: not polished like the big brands, but enough to call the bulbs genuinely “smart” rather than just gimmicky.