• This posture corrector is lightweight and convenient to carry on your pocket or traveling case and use
• Built-in smart sensor vibration reminder to monitor you anytime and anywhere. And there is no constriction for you to wear it
• The belt can be adjusted to your needs. 20-25 degrees of round-shouldered posture will be alarmed for you to correct
• The battery has a long working life. It can be used for 15 days by 1-hour charging
• Your back posture will be greatly improved through wear this posture corrector for a long time

Specifications:

• Material: ABS + PC
• Power Supply: 3.7V 400mAh Lithium Battery