Spec:

Bluetooth version :5.0

IC: Airoha chip

Earphone capacity :40mah

Case capacity :2600mah

Working hours :4-5 hours

Cyclic charging :12-15times

Function: Volume+/-, Song next & pre, Phone answer & hang up

Material:  black ABS

Color:  Cloth art color or custom color

Support OEM customized services, such as logo, specifications, colors, pack etc

Warranty :12 months