PURRL Noise Cancelling Headphones Wireless Headphone

Specification: Transmission distance: 10 meters Features: voice control, call function, support music Bluetooth protocol: 4.1 Channel: stereo How to use: Head Mount Always one or both ears: bilateral stereo Talk time: 14h Standby time: 840h Playing time: 21h Impedance: 32Ω Sound pressure level: 103 ± 3 dB. Frequency range: 20H --- 20KHz Weight: 280 g. Size: 180 x 200 x 85 mm. If you have any questions about our products, please contact us by email, we will reply to your email within 24 hours