Hi,my dear angel, welcome to Jacenvly, our products are cheap and good quality, price is fair, you can't miss it. If this product is not your style, please click on our store, we have many kinds of products, there will be you like and suits you. If you have any questions about your purchase, please send us the first message, we offer world class customer service to make your purchase without your worries. Have a nice day. Single Ear Headset with Mic Bluetooth 5.2 Earphone LED Display Earpiece Wireless Handsfree Headphone Features: 1: Humanized design no longer have to worry about the headset seeing the battery 2:Ergonomic design does hurt and does fall off for a long time 3:Lightweight body design, matched with the three-point ear gallery structure 4:Wireless Bluetooth headset car sports ear-mounted super long battery life Description: 1.Bluetooth version:V5.2 2.Transmission distance:15m 3.Bluetooth protocol: HFP/HSP/A2DP/AVRCP 4.Working voltage:3.3V-4.2V 5.Charging voltage:4.8--5.2V/0.5-2A 6.Charging time:1-2 hours 7.Music Play Time:25 hours of continuous playback 8.Calling Time:30 hours of continuous talk 9.Standby Time:365 days long standby time 10.Function keys: button function 11.Microphone type: built-in Mic 12.LED Power Display:battery level is clear at a glance 13.Comfortable To Wear:270 degree rotation, can be worn on both left and right ears 14.Functions: play / call, power display, voice answering, caller ID Packing list: 1 x Bluetooth Earphones 1 x charging line 1 x carton Features: 1: Humanized design no longer have to worry about the headset seeing the battery 2:Ergonomic design does hurt and does fall off for a long time 3:Lightweight body design, matched with the three-point ear gallery structure 4:Wireless Bluetooth headset car sports ear-mounted super long battery life