Foldable wireless headphones, designed for maximum convenience. The long battery life and built-in microphone allow you to listen to music or take calls without interruption even when the battery runs out, as they continue to work via the included audio cable.Material: recycled ABS (100% rABS)Type: over-earWireless transmission: BT v5'4Capacity: 300 mAhApproximate autonomy: 20 hApproximate charging time: 1 hInput: USB-C, microSD, 3. 5 mmHeadphones: Frequency response: 20 Hz - 20 kHzSensitivity: 108 ±3 dBImpedance: 32ΩSpeaker diameter: Ø 40 mmSound power: 20mWMicrophone: Frequency response: 10Hz～28KHzSensitivity: -48 ±3 dBV/PaIncludes: USB-A / USB-C cable, 3'5 mm audio cableDelivery: in a black bag in a kraft paper gift box

Dimensions: 163 x 90 x 203 mm | Box: 181 x 71 x 151 mm