Feature:1. Automatic Reminder: This smart back brace can correct your posture problems through intelligent monitoring and automatic reminder.2. Ergonomic Design: This back posture corrector features ergonomic design that easily fits the neck curve of kids, easy to put on and take off.3. Dual Modes: This smart back straightener adopts waking mode and study mode. And you can see the correction times on the screen.4. Long Battery Life: This upper back brace can be used for 10 days after 2 hours charging, and it can be easily operated.5. Durable Material: This smart back brace is made from premium ABS and silicone material, which is comfortable and durable.Specification:Item Type: Smart Back BraceMaterial: ABS, SiliconeBattery Type: Lithium Battery (Inbuilt Battery Included)Battery Model: 602035Battery Capacity: 450mAhCharging Time: 2 HoursRemind Angle:Learning Mode: 35 DegreesWalking Mode: 25 DegreesProduct Size: Approx. 28.5 x 19cm / 11.22 x 7.48in ( Manual Measurement, Slight Error May Exist )How to Use:Steps for usage:1. Press and hold the main button for 3 seconds to power on:Mode switch:Study/Walk: Press the main button 1 timeVibration/Sound: Press the main button 2 timesData reset: press the main button 3 times2. Confirm the posture and start working3. When the posture is incorrect, the host vibrates or sounds to remind4. Press and hold the main button for 3 seconds to shut down, and long press the main button to shut down after useIndicator light description:The hose indicator light: When the posture correction belt is activated, the indicator light is always on.Charging status: The battery light flashes.Fully charged status: The battery light is always on.Low battery: The battery light flashes.Package List:1 Back Brace1 x USB Cable