The Band 9 does the basics well: step counting, sleep tracking and notification alerts, with battery life long enough that you forget about charging.
Key specifications
| Display | 1.62-inch AMOLED |
|---|---|
| Battery | Up to 21 days |
| Sensors | Heart rate, SpO2, sleep |
| Water resistance | 5 ATM |
What we like
- Nearly three weeks per charge
- Light enough to wear overnight
- Cheap, with easily swapped straps
What to consider
- Heart-rate accuracy drifts during hard exercise
- No built-in GPS
Should you buy it?
Excellent value as a first device. Just do not treat its numbers as medical data.
Marketplace prices move fast. Before ordering, check the comparison table above — we update it daily.