XEBEC Water Cooling Clothing Water Cooling Vest Almost unused. <Specifications> ・Cold water circulates through the tubes Cools the body directly with flowing cold water ・Safe to use in any environment (Unlike air-blowing types, there is no suction of dust, etc.) ・Washable and hygienic <Set Contents> ・Vest body ・Lithium-ion battery ・Charging cord ・Instruction manual Material: Polyester Hose: Silicone rubber Tank: TPU Weight: Approximately 690g (excluding battery) <Pump> Output: 7.4V/200mA Flow rate: Approximately 300ml/min <Battery> Type: Lithium-ion battery Battery capacity: 5000mAh Weight: Approximately 125g Dimensions: Approximately H90 x W62 x D8mm Charging time: Up to 4.5 hours (when using a 2.0A charging adapter) Voltage: DC5V/2A (MAX) <Controller> Program mode 1. Continuous 2. 15 seconds on, 30 seconds off 3. 8 seconds on, 45 seconds off <Size> Free size (equivalent to S-4L) Shoulder width: 30cm Chest: 90cm-125cm Length: 41cm Left and right chest zipper pockets: Width 41cm x Depth 19cm