HighlightsBluetooth solution - V5.4;Waterproof rating - IPX7Diaphragm - Double bass,360 degreen stereo sound qualitySpeakers - 47mm*2, 20 cores, with dual speakers and dual Low frequency radiation units, Surprisingly powerful bass effect;Battery capacity - 2000mAh * 2SpecificationBrand - CyborisDetailsCyboris S16 High Quality IPX7 Waterproof Bluetooth Speaker, Hifi Wireless V5.4 Outdoor 2.0 Stereo Portable Speakers DSP 30W Loud Stereo Soundbox Bluetooth version - JL V5.3Speaker power - 2*20WPlay time - 4-12HPower input - TYPE-C 5V/2.0ACharging time - 3-4HTransmission - 15 metersSpeaker size - 47mm*2Frequency response - 60Hz~20kHzSensitive - 80dBS/N Ration - 90≥dBTDH+N - ≤8%Battery - 4000mAh (7.4V 2000mAh)Product size - 194*55*78mmBare metal weight - 594gFuncitons - AUX/TWS/BT/TF Product size - 194*55*78mmPacking size - 252*108*71mmProduct net weight - 594gProduct gross weight - 845g20pcs/carton - Carton size - 440*385*250mmNet weight - 16.90KGGross weigh - 17.60KGAccessories - instruct