Technical Specifications:General specificationTransducers: woofer 2 x 106mm (4"), tweeter 2 x 20mm (0.75")2 x 40 W RMS-woofer + 2 x 40 W RMS-tweeter (AC mode)2 x 30 W RMS-woofer + 2 x 30 W RMS-tweeter (battery mode)Power input: 24V/4.2AFrequency response: 50Hz – 20kHzSignal-to-noise ratio: > 80dBBattery type: Li-ion polymer 72.6WhBattery charge time: 6.5 hours (24V/4.2A)Music play time: up to 24 hours (dependent on volume level and audio content)USB specificationUSB charge out: 5V/2.0A (maximum)Wireless specificationBluetooth version: 5.1Bluetooth profile: A2DP 1.3, AVRCP 1.6Bluetooth transmitter frequency range: 2.402GHz – 2.480GHzBluetooth transmitter power: ≤ 10dBm (EIRP)Bluetooth transmitter modulation: GFSK, π/4 DQPSK, 8DPSKFeaturesThe loudest JBL boombox everMonstrous bass you can feelKeep the party going with 24 hours ofplaytimeMake a splash with IPX7 waterproof designStrong, bold designCrank up the fun with PartyBoostPower up with the built-in powerbankDimensionsDimensions (W x H x D): 484 x 201 x 256 mm (19.1" x 7.9" x 10.1")Weight: 5.9 kg (13 Ibs)What’s in the box:1 x JBL Boombox 21 x JBL branded power adaptor1 x Quick start guide1 x Safety sheet1 x Warranty card