QCY T4 true wireless mini invisible earbud in-ear headphones Color:Black Play format: MP3

Play format: MP3

Operation mode:Touch + button

Packing: PVC simple packing

Bluetooth Protocol:

Speaker type: portable

QCY T4 true wireless mini invisible earbud in-ear headphones Color:Black Play format: MP3Bluetooth version: V5. 0 Compatible system: iOS Android Windows App support: version 5. 1 and later on Android Communication distance: 10 meters (under barrier free open environment) Use time: about 4 hours of talk; about 4. 5 hours of music Support protocol: HFP HSP A2DP AVRCP AAC SBC Charging bay capacity: 380mAh Charges in the charging bay: about 4 times for both ears Product accessories: earphones and charging box 3 pairs of ear caps (S, M, L)