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 
Russia
Russia
Available
Comparison with similar products
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Sombrero 400909-40mAh Long-lasting power
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| Brand | Sombrero | Samsung | SAMS Online | Tiktop2 | QuasuHaven | LIGE |
| Model | 400909-40mAh | EB-BR800ABU, EB-BR810ABU, EB-BR170ABU | 2025 | V4 | ||
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| Price | $7.73 | $20.15 | $73.52 | $72.38 | $23.99 | $68.52 |
| Seller | Joom | Joom | Joom | Joom | Amazon | Joom |
| Update | August 27, 2025 | January 7, 2026 | December 8, 2025 | December 8, 2025 | December 6, 2025 | January 7, 2026 |
| Capacity | 400909-40mAh | 427mAh | 6040mAh | |||
| Compatibility | Smartwatches | Samsung Gear S4 SM-R800, SM-R810, SM-R805, SM-R815 | iOS, Android | |||
| Battery Capacity | 1000 mAh | 400 mAh | 400 mAh | |||
High Capacity Rechargeable Battery
$7.73
