Sit and stand taller. This smart posture corrector gently vibrates when it detects slouching, training your body to maintain proper alignment. Automatic sensing detects improper sitting or standing positions. Only 70g for comfortable all-day wear. 15-day battery life per 2-hour charge. Adjustable elastic straps fit children and adults.Specifications:• Material: ABS plastic + elastic back strap• Weight: 70g• Dimensions: 16.5 × 13 × 4cm• Rated Voltage: 5V• Rated Power: 2W• Battery: 150mAh / 3.7V• Charging Time: ~2 hours• Battery Life: 15 days per charge• Charging Interface: Standard V8• Colors: Black, White, Pink• Display Options: Button style or LCD modelWhat's Included:• Posture corrector ×1• Charging cable ×1Each description above is based strictly on the supplier's original product specs. No features have been invented or exaggerated.