1. On-Ear Retro Wireless Headphones 2. Another Breakthrough In Acoustics, Bringing Truly Good Sound Quality 3. High-End Retro Appearance, Metal Plaques And Lychee Leather Texture Craftsmanship Create A Retro Trendy Style 4. Widely Compatible, Can Be Connected With Bluetooth, Universal For Mobile Phones/Tablets/Computers 5. Multi-Function Buttons, Multi-Function Buttons Make Operation More Convenient Name: Retro Headphones Product Model: -8 Wearing Method: Head-Mounted Bluetooth Version: V5.3 Chip Drive Unit: 40mm Frequency Response Range: 20HZ-20Khz Standby Time: About 200 Hours Charging Time: About 2 Hours Battery Capacity: 350mAh Charging Interface: Type-C Barrier-Free Transmission Distance: About 10 Meters Note: Different Batches May Have Differences In Product Appearance, Color, And Printed Characters, Which Not Affect The Use Colour:A: cool black Material:ABS Package Contents: 1 Pair x Headphones 1 x Charging Cable 1 x Audio 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 picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.