The factory uniformly uses LP40PRO Black as the outer packaging box. After you receive the goods, please confirm whether the color name on the back of the packaging box is correct. If it does not correspond to the color you ordered, please contact customer service for consultation, we will give you a satisfactory reply in time, thank you. 1. Upgraded Bluetooth 5.3 chip, the connection is more stable and the delay is lower, and it supports Bluetooth devices. 2. Support ACC/SBC HD audio decoding. 3. 13mm dual-frequency large moving coil unit, composite dual-diaphragm, high-frequency analysis. 4. True TWS, regardless of main and auxiliary ears, free switching between ears, can be used alone. 5. Take it out and connect, pair in seconds, and automatically pair after the first pairing. 6. Long battery life, 3-4 hours in a single use, and the charging compartment can be used 4 times. 7. Adopt Type-C interface, fast charging, charging sharing magnetic design. Specification: Bluetooth version: 5.3, Horn diameter: 13mm, Frequency Range: 20Hz-20KHz, Headphone battery capacity: 30mAh, Transmission distance: 10m, Charging interface: Type-C, Charging compartment battery capacity: 250mAh. What's in the box: 2 x Bluetooth Earphones, 1 x Charging Case, 1 x Charging Cable, 1 x User Manual.