1. Battery: 200mAh 2. Charge for 30 minutes and use time for 5 days. 3. No need to strap, medical grade gel patch. 4. One-click connection to the mobile phone, easy to obtain the real-time angle, adjustable setting range, vibration level and vibration delay. 5. Provide angle monitoring 24 hours a day, with ms-level response time. 6. Master the posture anytime, anywhere.