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• Product model: I8 Pro Max Platform: mtk2502c high configuration motherboard memory: 128MCase: Alloy Strap: silicone Charging mode: magnetic suction charging Main screen: 1.75 high-definition screen Bluetooth: support Bluetooth ca-ll musicBT?4.2+5.0 Dual-mode7. Battery: 300mAh lithium ion battery, longer battery life Standby time? About 30 days Use time? About 7-10 days Vibration motor: support Side key ?Knob button Horn/Receiver? YES, Two in one loudspeaker and handset Power amplifier? YES waterproof grade: IP68.