16.2mm large dynamic coil unit, providing more precise and powerful sound effects Open design fits inside the ear without blocking the ear canal Hi-Res Gold Label certification, high-fidelity pure original sound LDAC high-resolution audio coding, close to CD-level lossless sound quality 10 hours of battery life in a single use, 45 hours in battery packs Allow pairing with 2 Bluetooth devices at the same time, automatically switch to mobile phone call The earphones are only 10.1g, so there will be no heavy feeling Bluetooth 5.3 provides faster connection, low power consumption and more stable signal IPX4 waterproof level