Features 1、VIBRATION REMINDER: This intelligent strapless posture reminder could record your spine, it will vibrate to remind you to get straight up. 2、POSTURE DETECTION: It is a intelligent strapless posture reminding tool, you could place it onto your upper back. Improve your posture and makes you look more healthy and elegant. 3、Removable: Removable design, usb charging. Built in 602030 200mAh li ion battery, it can remove and use the USB charge to keep it work. 4、PORTABLE: Convenient without pressure on the shoulder. It is a simplest and effective way to real time remind you to keep right posture. 5、DAILY TRAINING: Intelligent strapless posture reminder, daily training could help you to adjust your posture and built good habit gradually. Specification Item Type: Posture Reminder Material: ABS, silica gel Power Supply: Lithium ion battery (Built in) Battery Type: 602030 Battery Capacity: 200mAh Package List 1 x Posture Reminder 1 x USB Cable