fidelity sound Builtin 13 mm speaker unit with a composite diaphragm design to reduce distortion. ENC noisereduction microphones actively reduce background noise by up to 80% for clearer calls and conversations with minimal interference. Bluetooth 5.3 and onestep pairing Equipped with Bluetooth 5.3 supporting HFP, HSP, A2DP, and AVRCP for efficient transmission and stable connections with low latency. After the initial pairing, removing the earbuds from the charging case automatically reconnects to the paired device for quick, hassle use. Ergonomic design and IP7 waterproof Ultralight, ergonomic design tested for comfort to be worn for extended periods. Sealed shell and IPX7 waterproof polymer nanocoating protect the earbuds from rain and sweat (IP7 waterproof rating noted in the product details). Onetouch control A single button provides easy control and helps prevent accidental touches. Supports play/pause, answer/hang up/reject calls, volume up/down, track switching, and activating the voice assistant. Use cases Commuting and travel: stable Bluetooth connection and clear calls in noisy environments. Working out: IPX7 waterproof coating offers protection during sweat and rain, with secure fit for vigorous activity. Remote work and calls: convenient onetouch controls and reliable mic performance for clear conversations.