Features: Built-in BT5.1 chip, stable signal, low latency, strong anti-interference ability. Adopt 13mm moving coil unit, multi-layer sound effects are superimposed to improve the clarity and bass effect while ensuring equalization, HiFi sound quality. After completing BT connection and pairing for the first time, no need to manually pair again, and the device can be automatically connected. Ergonomic semi-in-ear design, the earbud fits ear canal, not easy to drop, comfortable to wear. Support AAC/SBC audio decoding. Smart touch operation, easy to play/pause, switch previous/next song, answer/hang up, etc. Widely compatible with BT-enabled mobile phone, tablet, laptop, etc. Specification: Brand: Lenovo Model: XT95 Pro Color: Black/White(optional) Version: Standard/Luminous Version(optional) BT version: V5.1 Transmission distance: Up to 10m(barrier-free) Speaker diameter: 13mm Audio decoding: AAC, SBC Battery capacity: 300mAh(charging case), 30mAh*2(earbuds) Packing list: 1 * Pair of earbuds 1 * Charging case 1 * Charging cable 1 * User manual