Products Name: Baseus Wireless Headphones Sport Bluetooth 5.0 Earphone Headset Ear Buds-Black 7 levels of ergonomic wear design and adjustable angles of ear pads to easily adjust the pressure on different head shapes, keeping the hairstly nice and comfortable to wear Highlights: Wireless 5.0, 10m Stable Connection Charge Once and Listen for a Week Dual Use , Calling while Playing,Smart connection technology supports connecting two devices at the same time. Reinforced Headband,Durable and Anti-deformation Telescopic rods sliding adjustment,Inner rotation fold adiustmen,Headphone headrotation adjustment Comfortable over-ear Headphones with noise isolation Lightweight and Folding Powerful Compatibility for Boundless Music Wire or Wireless Easy to Switch Full Specifications: Wireless version:V5.0 Communication distance:10m Standby time:300 hours Music time:40 hours(70% of the volumel Battery capacity :450 mAh/3.7V Rated input:DC5V=400 mAn Rated consumption current:10 mA Charging time:1.5 hours Frequency response range:20Hz-20KHz Charge interface:Type-C Compatibility:wireless audio devices Weight:190g Package Content: 1x Wireless Headphones 1x 3.5 mm cable 1x User manual 1x USB cable