It adopts ergonomic design, which does not fall during exercise and enables you to enjoy more comfortable wearing experience. The use of digital display charging box and dual microphone ANC noise reduction technology enables the remaining power to be distinctly displayed, clear sound quality and calls to be realized. Made of high-quality ABS material, the product is lightweight and comfortable. The length of the product is 7cm, the width is 5.5cm and the height is 3cm. It is compatible for Android and for iOS. With independent cavity and built-in high-fidelity full-range speakers, it enables you to enjoy HiFi sound quality. And it has smart pairing and convenient multi-function button control. After the earphone is taken out of the box, it can enter the pairing mode. Item Name: Bluetooth-compatible Earphone Model: YYK-530-1 Bluetooth-compatible Version: 5.1 Effective Distance: 10 Meters Use/Play Time: About 6 Hours Standby Time: 200 Hours Distance: 15m Earphone Battery Capacity: 120mAh (Included) Charging Box Battery Capacity: 500mAh (Included) Charging Port: Micro-USB Applicable Type: for Android/for Apple Features: ANC Noise Canceling, HiFi Sound, Clear Calls Colour:black Material:ABS Package Contents: 1 x Bluetooth-compatible Earphone 1 x Charging Box 1 x Charging Cable 1 x English manual 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 picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.