Bluetooth 5.3 greatly improves the connection stability. In complex environments such as subway commuting, lights, and noisy indoors, there is no need to worry about disconnection and stuttering. Wireless transmission is comparable to wired. HIFI audiophile-grade sound quality Combined with a rigid, soft and thin composite diaphragm, it creates a and spatial auditory effect, enjoying the presence of thick and not stuffy bass, clear mid-range layers, and loud and clear treble Smart digital display screen, full real-time LED display of left and right earphones and charging compartment power, you can know without opening the cover. Support ioS, Android, Window system mobile phones, and other Bluetooth smart devices. The -capacity charging compartment can not only charge the earphones, also charge your mobile phone. Bluetooth version: 5.3 Standby time: about 90 hours Headphone capacity: 45mAh Charging box capacity: 800mAh Transmission distance: less than 10 time: 6 hours Charging interface: -type Charging : DC5V/1A Operation mode: touch Colour: Black Material: ABS Package Contents: 1 Pair x Headphones 1 x Headphone Compartment 1 x USB Cable Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.