Product Parameters - Color: Black / White - Wireless version: V5.0 - Communication distance: 10m - Standby time: 300hours - Music time: 40 hours(70% of the volume) - Battery capacity: 450mAh/3.7V - Rated input: DC5V-400mA - Rated consumption current: 10mA - Charging time: 1.5 hours - Frequency response range: 20Hz-20KHz - Charge interface: Type-C - Compatibility: Wireless audio devices - Weight: 190g Function Design: - Power button - 3.5mm audio port - Type C charging Port - Long press: last song Single click: volume- - Long press: reject/Siri Single click: anser/hang up - Long press: next song Single click: volume *Natural Sound Player Extraordinary Sound Effect 40mm audio unit | Wireless 5.0 | 40h of battery life | Dual use *40mm Moving Coils for Immersive Listening 40mm high-precision moving coils to creat a wide and vivid sound field.Stunning bass and custom 3D stereo give you an immersive and realistic experience *New Wireless 5.0 Brings 10m Stable Connection Wireless 5.0 | Stable Connection | No Stulter New Wireless V5.0 chips bring high quality sound and stable and high-speed transmission over a distance of 10meters for clear and low latency calls and audio-to-video synchronization,without music or video stutter *Dual Use, Calling while Playing *Reinforced Headband, Durable and Anti-deformation With 304 stainless steel reinforced telescopic rods,the headphones are no longer fragile and the solid headband does not deform for long-term use *Adaptive Miscro-adjustment Design for Wearing without pressure 7 levels of ergonomic wear desing and adjustable angles of ear pads to easily adjust the pressure on differnt head shapes,keeping the haristyle nice and comforabtle to wear *Lightwright and Folding Design for Portability The rotary axis design enables multi-angle rotation and folding,and the compact size makes it easy to carry around *Adjustment while Wearing Headphones