Feature: 1. VIBRATION REMINDER: The vibration reminder trains you to maintain a healthy posture by using gentle vibrations to remind you to maintain proper posture. 2. INTELLIGENT REMINDER: Posture reminder can record your posture in real time, when the real time posture exceeds the set range, will vibrate to remind you. 3. SOFTWARE TRACKING: You can sync your posture training reminder with your phone to start your daily training sessions and track your progress. 4. PROMOTES GOOD HABITS: The back posture reminder promotes long term muscle memory, so even if you take it off, you will still stand up straight. 5. STRAPLESS DESIGN: Our posture reminder helps you get rid of the straps with a gel patch design that stays firmly in place on your back. Specification: Item Type: Posture Vibration Reminder Material: ABS Battery Specifications: Built in li ion battery, 350mah capacity (shipped with built in battery). Package List: 1 x Posture Vibration Reminder1 x USB Cable1 x Instruction Manual10 x Patch