1、The use of advanced Bluetooth 5.0 chip and low latency technology makes the connection and transmission more stable and faster. 2、You can change the game or audio mode with one click to meet different needs, giving you more choices. 3、Any earphone can be put into the charging box, and the other earphone can be used independently. 4、The ergonomic design keeps them in good condition during exercise because the rubber hooks hold them in the ears. 5、One key to play/pause/answer/hang up a call or call, it charges very fast, and it can last longer. Item Type: Bluetooth Earphone Material: ABS Bluetooth Version: 5.0 Model: GX501 Color: Black Function: Bluetooth Audio Conversion Scope of Application: Smart Devices With Bluetooth Headphone Built In Battery: Polymer Lithium Battery Headphone Built In Battery Capacity: 50mAh Charging Box Battery: Polymer Lithium Battery Charging Box Battery Capacity: 500mAh 2 x Headset 4 x Ear Plug 1 x Charging Compartment 1 x Charging Cable 1 x Manual 1 x Desiccant