Features: brand new and high quality Supports the reminder angle, vibration mode, and LCD display screen. Simple to use, comfortable to wear. Intelligent strapless posture corrector, you could place it onto your upper back. It reminds you to sit or stand straight up with a real-time gentle vibration reminder. High-precision sensor, effectively monitor the curvature of the spine and automatically remind it to develop a good posture. Especially suitable for people with a slight hunchback, people with bowed heads, long-term desk workers, and office workers. Can be used at any for time in daily life, providing correction to your body at any for time, making your life healthier. Made of quality materials, soft and elastic, non toxic, lightweight and portable. Detachable and washable silicone for shell. With USB rechargeable lithium battery, conveient to use. You could use this posture corrector in home, office, school, library or gym. Specification: Material: ABS Power Supply: USB Charging Optional Color: Red, Blue Size: As pictures shown. Quantity: 1 set Note: Transition: 1cm=10mm=0.39inch No retail package. Please allow 1-3cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you Package includes: 1 x Intelligent Posture Corrector 1 x USB Cable 1 x Manual (other accessories demo in the picture is not included.)