Bluetooth Version: V5.1 Speakers output: 4Ω, 52mm, 8W*1pcs Battery: 18650 Li-ion battery,1200mah 3.7V*1pcs Working time: 3-6 hours , Charging time: 2-5 hours Waterproof: Non Input power: DC 5V 1A Dimensions: 89*89*115MM, Net weight: 1KG