Audio Specification: Driver Type Neodymium Frequency Range 45Hz 20kHz Drivers 2 x 3" Woofer, 2 x 0.6" Tweeter, 2x Passive Radiators Stereo/Mono Stereo Maximum Sound Pressure Level 91 DB SPL @1 M Cabinet Principle Sealed with passive radiators Power Amplifiers Two 30 watt class D amplifiers for the woofers, Two 10 watt class D amplifiers for the tweeters Controls & Connectivity: Wireless Connectivity Bluetooth 5.3 Wired Connectivity AUX 3.5mm Bluetooth Range 60m, 200ft Top Panel Controls ON/OFF, Bass, Treble, BT pairing Microphone System Yes Codecs SBC, AAC-MPEG 2 and LC3 Bluetooth Multipoint Connectivity Yes Physical Unit: Dimensions L230xW98xH110 mm Weight 1.8kg Water Resistance IP67 Colorways Black & Brass, Cream Battery: Play Time Plus DE 30hrs Battery Type Rechargeable, Replaceable, Li-Ion Battery Battery Preservation Yes Quick Charging 20mins gives 5hrs of playtime Charging Time 3hrs to full recharge Power Input USB-C 5V/9V/12V/20V-3A Compatible Apps: Marshall Bluetooth App Some playlists deserve to go on tour. Middleton II can give you and your music over a day's performance without needing to stop. And when it’s finally time to charge, you’ll be up and running again in 20 minutes. 12 Months Local Manufacturer Warranty Store in a cool dry place. China