Come and see our amazing products. Two Bluetooth devices can be linked at the same time Bluetooth version: V4.2+EDR Charging time: about 1 hours Play Music/Call time: about 2 hours Standby time: about 100 hours Battery type: Rechargeable polymer Lithium battery Function: Fast charge, HD call Feature: 1.Flexible, light weight, comfortable fit and durable design. Best choice when you do sports. 2.Adopt true wireless technology, enjoy your wirelessly sports. 3.Double-ear main and subsidiary earpiece design, innovative and excellence. 4.Intelligent charging box provides fast charge, worry free for endurance. 5.Strong compatibility and compatible with devices as long as they are Bluetooth support. Specification: Item Type: Bluetooth Earphone Color: White Model: TWS Bluetooth Version: 4.1 Model: TWS Impedance: 16Ohms Working Volt Pls confirm with us about the packing info, stock color and exact production time before placing your order.