1. Plexiglass cover, light transmission, good scratch resistance2. The dial can be easily replaced, the design can be defined, and the first screen can be set3. 16 exercise modes, all-round monitoring of exercise4. Support languages: Chinese, English, Italian, German, Japanese, French, Spanish5. Body memory: 32Mb6. Wearing style: wrist strap7. Material: TPU+plastic+silicone8. Compatible platform: iOS9. Applicable platform: Android platform10. Screen size: 0.96 inches11. Battery capacity: 85mAh12. Interface: magnetic socket13. Wireless distance: 10m14. Functions: blood oxygen/blood pressure/health/heart rate monitoring, step counting, turning wrist screen, tracking/alarming, stopwatch timing, sleep analysis, calorie consumption, alarm clock reminder, SMS reminder, sedentary reminder15. Waterproof grade: IP68 life waterproof16. Dimensions: 42.3 x 20.5 x 14mm17. Weight: 20g

https://olla.gr/s90-sleep-monitoring-bluetooth-sports-pedometer-smart-bracelet-red/