4 Mics with Environmental Noise Cancellation Technology ENC Wireless Earbuds can effectively block out amount of background noise & make your voice more clearer. The other side can clearly hear your voice in the noisy environment like a subway station. Bluetooth 5.3 & One-step Pairing Wireless Headphones with Mic have Bluetooth 5.3 chip will automatically connect to the last paired device when take the Wireless Earbuds out of the charging case. Bluetooth 5.3 provides a stable transmission without interruption. 25 Hours Playtime The Bluetooth Earbuds alone provide up to 5 hours of high-quality sound output on a single charge & the included charging case provides an additional 4 charges, giving 25 hours of a total playtime. Immersive Sound & Lightweight Wireless Headphones adopts unique stereo design & 13MM big composite diaphragms to produce powerful sound. The single one is only 4g, charging case & 2 earbuds are 53g totally. IP7 Waterproof & Touch Control Bluetooth