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X37 Wireless Bluetooth Earphones Headphones Outdoor Sports Headset 5.3 With Charging Bin Display Touch Control Earbuds for Muisc Color:Black Press two keys: press blueThis headset has a long battery life, and the charging bay can be used as an emergency power bank to charge the phone. Applies to all Bluetooth enabled mobile phones. Waterproof IPX5. Not afraid of sweat after exercising. Product specifications * Model: X37 * Charging cable type: USB * Bluetooth version: V5. 3 * Single headphone capacity: 50mAh. * Betty charging box: 2200mAh. * Working time: 3~5 hours. * Standby time: 150 h for one ear (Use with
