Sell Back posture corrector clavicle back support correction back straight best price

Attentions: People with serious back problem should seek helps from a doctor or hospital. The process of correction is not easy, and you need to insist using it before you can see the effectiveness. Be sure to read the user manual carefully before use. Parameters: Charging interface: standard V8 USB interface Battery Capacity: 500mAH/3.7V Power Supply: 5V Power consumption: 0.4W Charging Time: Approximate 2 hours Charging Voltage: 5V Net Weight: 85g Material: ABS+ High elastic nylon belt