What's in the box:

YYK-520 Business Bluetooth 5.0 Headset Wireless Headphones Ear-hook Earphone Hands-free with Mic with 500mah Charging Case (Standard)

Features:
BT 5.0 technology, faster & stable signal transmission, clearer sound quality and lower power consumption.
500mah charging case with LED display, you can konw the remaining battery life at any time.
Soft rubber ear hook, ergonomic design, comfortable and painless.
The earphone head can rotate 180 degrees for both left and right ears wearing.
Built-in HD microphone, intelligent noise reduction, delivers clearer and more real talking sound in stereo mode.

Specification:
Model: YYK-520
Type: Headset
Material: ABS
Color: Black
BT Version: V5.0
Operation Range: Up to 10 meters (no obstacle)
BT Working Frequency: 2.402GHZ -2.480GHz
Speaker Impedance: 13O
Battery capacity: 60mAh
Charging Case battery: 500mAh
Earphone Charging Time: 1.5 hours
Charging Case Charging Time: 1.5 hours
Working Time: 5 hours
Standby Time: 120 hours
Charge Port: Micro USB
Package Size: 14 * 8.5 * 2.5cm / 5.5 * 3.3 * 1.0in
Package Weight: 145g / 5.1oz

Package List:
1 * Headphone
1 * USB Cable
1 * Charging Case
2 * Earcap
1 * English User Manual