Stone 180 comes equipped with 1.75" Dynamic Drivers for powerful immersive sound Its power packed 800mAh battery ensures extended indulgence in musical bliss with up to 10 hours of play time, Charging Time : 1.5 Hours The speaker offers 5W of premium High Definition sound, Frequency Response - 70Hz-70kHz Stone 180 supports instant wireless connectivity with latest Bluetooth v5.0 Connect two Stone 180’s and turn the scene right around with double the volume at the same clarity level, get the party started anywhere, anytime with the boAt Stone 180 It is IPX7 rated which offers protection against sweat and water.