Weight and dimensions Product weight: 228 g Efficiency Wearing style: Headband Foldable: Yes Control Type: Buttons Volume control: Button Application: Calls/Music Maximum sound pressure level: 99.63 dB Headset type: Stereo Product type: Headphones Product color: Black Packaging data Packaging type: Hanging box Package contents Warranty card: Yes Wires USB Type-C AUX Quick Start Guide: Yes Ports and interfaces USB connector: USB Type-C 3.5mm connector: Yes Bluetooth version: 5.0 USB connection: Yes Connectivity method: Wired and wireless Bluetooth: Yes Battery Supported battery type: Built-in Battery powered: Yes Music playback time: 22 h Fast charging time: 10 min Fast charging: Yes Microphone Noise-canceling microphone: Yes Safety warning Warnings Keep away from children. Do not use near sources of heat or fire. Check the condition of the batteries regularly to prevent leakage. Headphones Headphone sensitivity: 99.63 dB Total harmonic distortion: 3% Impedance: 32 Ω Speaker diameter: 4 cm Frequency response: 20 - 20000 Hz Headphone construction: On-ear Noise Cancellation: Yes Supplier Features Battery life: 1320 min