Wireless Single Ear Bluetooth Earphones Open Type Non In Ear Detachable Battery Replaceable Product parameters： Product Name:Bluetooth earphone Material:ABS Charging time: about 2 hours Working range: 10M Continuous usage time: about 20 hours Battery capacity: 140mAh Product size:6.2*5.3*1.1CM /2.4x2.1x0.43in Bluetooth ：5.4 Product description: Interchangeable battery, no pain when worn for a long time without entering the ear, adjustable 180 ° both ears, ultra long battery life for continuous listening to music for 20 hours, with real-time battery display . High energy and large capacity battery： listening to music for more than a day for a long time, supporting continuous music playback for about 20 hours, and enjoying life in standby for long time. Comfortable to wear： can not be thrown off when you are exercising, in-ear, fits different ear shapes and does not fall off during strenuous exercise. Large moving ring speaker：with the international tuner master to redesign the high, middle and low three frequencies, balanced restoration of sound layer. The new Bluetooth 5.4： is continuously stuck, the transmission signal penetration is strong, the transmission is faster and more stable, and the treble sound source signal is guaranteed. Package Included: 1xWireless Earbuds 1xUSB Charging Line 1xSpecification