Features: Regardless of whether you want to use the convenience of Wireless Headphones or the long-lasting properties of a wired- connection, you have the- choice with our Blue tooth Headphones over ear. We always- up to date for better sound effects and a better listening experience. The soft over-ear pillows have advanced ventilation and a unique ergonomic- fit for an individual, flexible- fit for every for head shape. These Headphones Blue tooth offer more stable transmission speed, lower latency- and better o- output. You can enjoy listening to music or playing the o- when in the subway-, railway-, aircraft, etc. Specifications: Material: ABS Size: approx 188x185x78mm/7.4x7.3x3.1-inch BT: v5.1 Standby- time: 300 hours Charging time: 2 hours Frequency: 20Hz-20Khz Communication distance: 10 meter Color: violet-/azure-/gradient- black/pink/blue Note: Please allow 1-3cm error due to manual measurement. pls- make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1X Wireless Headphone