Button operation, digital display of power, Bluetooth 5.3 headset for both ears,The headset is equipped with omnidirectional microphone and unidirectional pickup microphone, which can better eliminate ambient noise and receive human voice, and make high-definition calls 140mah polymer battery, 20 hours of battery life on a single full charge.180° rotating ear hook, universal for both ears. Specification: Type: Wireless TWS Earbuds Color: Black Material: ABS Sound quality: HIFI sound quality Bluetooth version: V5.3 Noise reduction version: cvc8.0 Bluetooth Protocol: HFP/HSP/A2DP/AVRCP/OPP/PBAP Music Playing Time: about 20h Transmission distance: 10 meters/33ft Charging Time: About 1 hours Package Included: Headphones x1 Charging cable x1 Instruction manual x1 Ear caps x3 (one of which is already installed on the headphones)