Description: Type: Headphone Transmission distance: 10m Battery capacity: 400mAh Sensitivity: 105 3db Speaker diameter: 40mm Playing time: about 10h Standby time: about 120h Charging time: about 2h Built-in microphone: Yes Support TF card Charging port: USB Song switching: supported (short press the function key) Volume adjustment: support (long press the function key) Answer the call / hang up the call: support (short press the function key) Audio I / O interface: supported Specifications: Use ultra-thin smart casing to save in ultra-low power consumption mode Active noise reduction can block external noise, allowing you to immerse yourself in music Transparent mode for listening and interacting with the world around you Spatial audio dynamic head tracking provides cinema-like sound surrounds you Compute audio combines custom acoustic design with Apple H1 chip and software to bring a breakthrough listening experience Designed with knitted mesh mask and memory foam ear pads, it fits perfectly Easy setup, head detection and seamless switching between devices bring a magical experience Active noise reduction and spatial audio support, 20 hours of listening, watching movies or talking time Package Included: 1*Headphone 1*Charging cable 1*Instruction