Foldable wireless headphones designed for a better fit or storage. With a built-in microphone, they allow you to listen to music or answer calls without interruption even when the battery runs out, as they continue to work through the included audio cable.Material: ABS, BambooType: over-earWireless transmission: BT v5'0Capacity: 400 mAhApproximate autonomy: 4 hApproximate charging time: 2 hInput: USB-C, microSD, 3. 5 mmFrequency response: 20 Hz - 20 kHzSignal-to-noise ratio: 70 dBSensitivity: 84 ±3 dBImpedance: 32ΩSpeaker diameter: Ø 40 mmSound power: 30mWIncludes: USB-A / USB-C cable, 3'5 mm audio cableDelivery: kraft paper gift boxDimensions: 160 x 190 x 45 mm