True Wireless and Hifi-Stereo Sound]: True wireless stereo featured earbuds with advanced bluetooth 5.0 technology with deep bass and crystal clear treble., ensure premium sound quality, gives you perfect music enjoying. [Enhanced Stable Signal Connection]: The wireless earbuds are designed with advanced chipset and ensuring faster and stable signal connection and transmission, the bluetooth connection is about 10 -15 meters (32-49ft), no need to worry about walking away or losing connection. [Portable 1000mAh Charging Case]: The earbuds can be used for about 6 -7 hours music play per single charge and the charging case can be charged for 5-6 times, long battery life provides a wonderful using experience without worrying about battery run out too quickly while on the go. The charging case can also be used emergency charger for your cell phone, very convenient and flexible. [Portable 1000mAh Charging Case]: The earbuds can be used for about 6 -7 hours music play per single charge and the charging case can be charged for 5-6 times, long battery life provides a wonderful using experience without worrying about battery run out too quickly while on the go. The charging case can also be used emergency charger for your cell phone, very convenient and flexible. [Secure Fit & Compatibility]: Mini in-ear design and extremely lightweight, different size eartips can fit your ear more perfect and stay more comfortable, block surround noise, make you enjoy the music more fantastic.