Roundshaped portable speaker with integrated microphone ideal for making your environment more modern and cheerful. The speaker has a battery life of approximately 4 hours and 30 minutes per day. If no personalisation is chosen the grille is supplied loose in the gift box. Once attached to the speaker the grille cannot be removed again.material recycled abs 100% rabs wheat straw fibre wireless transmission bt v53 capacity 400 mah approximate autonomy 4h 30m approximate charging time 1h 40m input usbc 15w micro sd usba 3. 5 mm frequency response 280 hz 16 khz signaltonoise ratio ≥ 95 db sensitivity 50 ±3 db harmonic distortion ≤ 1% impedance 4ω speaker diameter ø 52 mm sound power 3 w microphone frequency response 20 hz 16 khz sensitivity 45 ±3 dbvpa features handsfree fully customisable grille includes usba usbc cable delivery gift box in recycled kraft paper which can be reused as a smartphone holder ø62 x 48 mm