Feature:--Composite diaphragm: carbon fiber composite diaphragm + large low-frequency acoustic voice coil, thick and flexible. --Memory Collar: The collar is preferably made of medical grade liquid silicone. --Selected high-quality materials. Product name: Bluetooth-compatible Headset Product model/G04 Bluetooth-compatible version/BT4.2 Applicable mode/Binaural neckband (in-ear) Battery capacity/90mAh Standby time/72H Use time/4-5H Charging time / 2H Product color/black/white/red Sale Options/OPP Bags Product weight/50g Packing list: 1 x Headphones 1 x Charging Line 1 x Instructions 1 x OPP Bag Note: 1. Due to manual measurement, please allow 1-3cm error. Make sure you don&#39;t mind before bidding. 2. Due to the difference of different monitors, the picture may not reflect the actual color of the product. Thanks. <div class="panel panel-info"><div class="panel-heading" style="font-weight:bold;">IMPORT: THIS ITEM IS SHIPPED FROM CHINA. PLEASE EXPECT UP TO 25 DAYS FOR DELIVERY</div></div>

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