Instructions: open the cover to turn on close the cover to turn offFeatures:Apply to most bicycle water bottle holder and car cup holder as well as mountaineering bags. When you feel hot.Any outdoor activity, whether playing, running, fishing, walking the dog, hiking, barbecue, camping, watching various sports competitions, you can use it Specifications: Power Supply: USB charging Material: Bottle: PVC, ABS Size: 21.5 x 8cm / 8.5 x 3.1 "(L x W) Capacity: 550ML Color: Blue Package includes: 1 ×Water kettle Fan 1 ×USB charging line tips：The cup cover contains battery, motor and switch, do not soak it or expose the charge port to water when cleaning the cover.Do not use the fan during charging.
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