Round-shaped portable speaker with built-in microphone for simple, intuitive use both at work and during leisure time.Material: Recycled ABS (100% rABS), Recycled aluminium (100% rAL)Wireless transmission: BT v5. 3Capacity: 400 mAhApproximate autonomy: 4 hApproximate charging time: 1h 40mInput: USB-C (1'5W) , microSDSpeaker: Frequency response: 280 Hz - 16 kHzSignal-to-noise ratio: ≥ 95 dBSensitivity: 50 ±3 dBHarmonic distortion: ≤ 1%Impedance: 4ΩSpeaker diameter: Ø 52 mmSound power: 3 WMicrophone: Frequency response: 20 Hz - 16 kHzSensitivity: -45 ±3 dBV/PaFeatures: Hands-freeIncludes: USB-A / USB-C cableDelivery: gift box in recycled kraft paper, which can be used as a smartphone holderDimensions: ø71 x 42 mm | Box: 80 x 80 x 60 mm