How to Use: Just turn it on and connect, refer to the manual for details. Specification: Item Type: Helmet BT Headset Material: ABS Model: T4 Color: Black Battery Type: Built in 180mAh Lithium Battery (Included) BT Version: 5.0 Frequency: 2.402-2.480GHz BT Range: Approx. 10-20m/32.8-65.6ft Package List: 1 x Helmet BT Headset 1 x Charging Cable 1 x Instruction Manual.
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