Baseus dual-channel low latency technology is certified by SGS. Multiple tests prove data authenticity<br />Flash Charge in 10Min, Listen to Music for 120Min- Type-C flash charge enables to charge the earphones to 80% in 10 minutes and listen to music for over 2 hours<br />20 Hours of Combined Battery Life- Combined battery life is 20 hours when used with a charging case<br />ENC during calls and MEMS microphones completely remove noise for clear calls even in a noisy environment<br />Auto Connection, In-ear Detection- After the first time pairing, the earphones can be automatically connected by opening the lid. The smart in-ear detection module enables play and pauses when you wear or take out the earphones<br />Smart Connection, Automatic Dual Device Switching- Two wireless devices can connect to the earphones at the same time without re-pairing. The earphones are applicable to a variety of devices such as cell phones, PCs, tablets, etc ">