Specs Four weight sensors Equipped with 4 high precision sensors Weight range: 5-200 kg (9-400 lbs) 50 g (0.1lb) precision Units: kg, lb, st lb Scale 45 body composition measured High-strength tempered glass platform Dimensions: 12.7 x 12.7 x 1.1 in. / 315 x 315 x 25,6 mm Advanced Bluetooth connection Chip Medical Grade Measurement Chip Dual Frequency Body Fat Scale Heart Rate Sensor included in Scale Display Clear, easy to see graphical display (2.8”) Power supply Rechargeable Li-ion battery Average battery life: up to 1 year per charge 30 seconds fast daily charge for quick usage.