Model : MK-002 Material : ABS+PU leather Battery : Polymer battery 400mAh Ultra slim& Strong Magnetic attached Unit size 123*127*160mm Net weight : 560g±2g Standby time : 100 days Bluetooth : V5.2 Frequency : 2402MHz~2480MHz (2.4G ISM Band, 40Channels) Charging time: 2-3 H