Features 1、Lightweight: Bone conduction headphones are lightweight, so your ears won't feel burdened and compressed, easy to carry, and not easy to drop. 2、Support Memory Card: Bone conduction wireless headphone supports up to 64G memory card, you can insert a memory card for independent playback. 3、LED Digital Display: Bone conduction earphone with led digital display, real time monitoring of headphone power, easy to charge the headphones in a timely manner. 4、Noise Reduction: Bone conduction wireless headphone intelligent noise reduction ambient sound, to keep the HD calls, 5.3 bluetooth stable wireless connection. 5、Waterproof: Bone conduction earphone IPX5 waterproof, to ensure that the headphone is not eroded by sweat, you can listen to 680 songs continuously, easily cope with long training. Specification Item Type: Bone Conduction Headphones Material: ABS Bluetooth: V5.3 Effective Distance: ≥10m / 32.8ft Charging Time: ≤1.5h Maximum Support: Memory Card 64G (not Included) Built in Polymer Lithium Battery: 300mAh Package List 1 x Headphones 1 x Instruction Manual 1 x Charging Cable