Outer Diameter: 205 * 95 * 20mm
Inside Diameter: 166 * 85.5 * 14mm big mobile phone can fit, under the mobile phone will not shake
【Focus on Self-discipline】Efficiently study, avoid cell phone interference, and grab your own time from your cell phone.
【Super battery life]】Under normal use intensity, a single charge can be used for 60 days (frequent use of side button B is not recommended)
【 Powerful function】 Button A lights up the screen, sets the time, and cancels the set time during the hesitation period. Case B opens the box and cancels the set time due to period. Emergency unlocks are added every 100 hours.
【Usage:】 You can give it as a gift to friends, classmates, children, family members. Make time more efficient
【Quality Assurance:】 If you have any unreasonable problems with the product support for seven days, please contact us in time, and we will give you a satisfactory solution in time.