Description:1. Angle sensor: Shoulder angle> 15 °, angle sensor detects the change of tilt angle2. Vibration mode: When you hump or bend over, you can use vibration to remind you3. Forward bending: when the tension is abnormal, the sensor will vibrate immediatelyProduct Name: Intelligent Posture Correction BeltSize: average size: (20-90 kg)Charging output interface: Android 5V interfaceBuilt-in battery specification: 500mAhWorking voltage: 3.7VRated power: 0.2WCharging time: 1 hourCrowd: Male / Female / Old and YoungLED reminder:1. Blue light flashing: reminder of posture change2. The red light is always on: charging3. The blue light is always on: the battery is fully chargedSpecifications:- Easily get perfect confident posture - start standing, sitting much straighter.- Align your shoulders, spine and upper back.- Improve posture & reduce slouching immediately with easily adjustable dual strap design.- Lightweight high elasticity nylon corrector can be worn comfortably under or over clothing.- Eliminates neck and back discomfort from sitting with rounded shoulders in front of the computer.- Wear all day to retrain your posture- it's nearly invisible when wear under a shirt.Package Included:1 x Correction Belt1 x charging cable