Sombrero 400909-40mAh High Capacity Rechargeable Battery: Long-lasting power
Give your smartwatch the juice it craves with this high-capacity rechargeable battery. Built to last (unlike your patience when your watch dies mid-workout), it keeps your gadget going longer, so you're not constantly hunting for a charger. Ideal for anyone who thinks 'low battery' is the ultimate buzzkill.
- Packs a 3.7V punch to keep your device running smoothly—no lag, no drama.
- With a 400909-40mAh capacity, it's like the Energizer Bunny for your wrist; it just keeps going.
- Fits more smartwatches than you can name, making it the universal donor of the tech world.
Features
- 3.7V output
- Compatible with smartwatches
- 400909-40mAh capacity
- Long-lasting power
General specs
- Brand: Sombrero
- Model: 400909-40mAh
- Seller: Joom
- ID: 650d1e55dc825901fee0faca
- Voltage: 3.7V
- Capacity: 400909-40mAh
- Compatibility: Smartwatches
- First listed by seller: 5/23/25
If you are interested in more details, you can find full information on the seller's page.
View on seller's site
#publicidad
$7.73
Last price update: 8/29/25
Out of stock
Price History for seller Joom
Shipping options
Delivery to 
United States
United States
Unavailable
Comparison with similar products
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Sombrero 400909-40mAh Long-lasting power
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| Brand | Sombrero | QuasuHaven | Mibro | Huawei | SUNKTA | |
| Model | 400909-40mAh | V4 | Watch C2 | WATCH 3 Pro | EF10-A | |
| Color | ||||||
| Rating |
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| Price | $7.73 | $23.99 | $35.99 | $37.99 | $546.80 | $39.99 |
| Seller | Joom | Amazon | Gshopper | Gshopper | Gshopper | Amazon |
| Update | August 27, 2025 | December 6, 2025 | July 25, 2024 | July 25, 2024 | July 25, 2024 | December 6, 2025 |
| Compatibility | Smartwatches | Global Version | iOS, Android | |||
High Capacity Rechargeable Battery
$7.73
