# Which smart light bulb offers the best energy efficiency? — Verified Specification Comparison

> All specification data verified from official manufacturer documentation.

Which smart light bulb offers the best energy efficiency?

## Products

### Philips 562702 60-Watt Equivalent A19 LED Smart Wi-Fi Color Changing Light Bulb with Bluetooth
```yaml
product: philips-562702-60-watt-equivalent-a19-led-smart-wi-fi-color-changing-light-bulb-with-bluetooth
brand: Philips
price_gbp: 7.67
origin_country: null
confidence_score: null
summary_source: generated_from_verified_specs_v1
lumens: 800
wattage: 8.8 W
dimmable: true
lifespan: 25000
connectivity: Wi-Fi and Bluetooth
color_temperature: 2200-6500
voice_assistant_compatibility: Amazon Alexa, Google Assistant, Siri Shortcuts
```

- **Price:** £7.67 [^1]
- **Summary:** This Philips smart A19 bulb produces 800 lumens and supports millions of colors plus tunable white light from 2200 K to 6500 K. It connects through Wi-Fi and Bluetooth, works with the WiZ app and voice assistants, and suits users who want flexible, remotely controlled indoor lighting.
- **Ideal For:** It suits energy-efficiency-focused users because it uses 8.8 W while replacing a 60 W bulb, delivers 800 lumens, and has a 25000-hour rated lifetime.
- **Additional Sources:** [^2]

### Govee 450LM RGBWW Smart Candle LED Bulb 2-Pack
```yaml
product: govee-450lm-rgbww-smart-candle-led-bulb-2-pack
brand: Govee
price_gbp: 15.52
origin_country: null
confidence_score: null
summary_source: generated_from_verified_specs_v1
lumens: 450
wattage: 5.8W
dimmable: Yes via app
connectivity: Wi-Fi and Bluetooth
color_temperature: 2700-6500
voice_assistant_compatibility: Amazon Alexa, Google Assistant, Matter
```

- **Price:** £15.52 [^3]
- **Summary:** This two-pack includes 450-lumen RGBWW E12 candle bulbs with adjustable brightness, tunable white light from 2700K to 6500K, millions of colors, scheduling, and music synchronization. It suits indoor decorative fixtures such as chandeliers and users who want app or voice control without using a wall dimmer.
- **Ideal For:** It suits energy-efficiency-focused users because each bulb uses 5.8W while delivering 450 lumens, and app scheduling can help reduce unnecessary operating time.
- **Additional Sources:** [^4]

---
## References & Sources
[^1]: The Home Depot, accessed 2026-09-13. https://www.homedepot.com/p/Philips-60-Watt-Equivalent-A19-LED-Smart-Wi-Fi-Color-Changing-Smart-Light-Bulb-powered-by-WiZ-with-Bluetooth-1-Pack-562702/313616477
[^2]: Elitsac, accessed 2026-09-13. https://elitsac.com/p/philips-smart-led-equivalent-frosted-tunable-a19-medium-base-light-bulb-046677562700
[^3]: The Home Depot, accessed 2026-09-13. https://www.homedepot.com/p/Govee-60-Watt-Equivalent-B10-Candle-Bulb-Shape-450LM-RGBWW-Smart-LED-Bulb-2-Pack-B800BAC1/338263860
[^4]: Best Buy, accessed 2026-09-13. https://www.bestbuy.com/product/govee-450lm-rgbww-smart-candle-led-bulb-2-packs-multi/J3R84LT562/sku/6624248