Illuminates Mini Pump
Bicycle pumpBETO ENG. & MKTG. Co., Ltd.
The pressure gauge of this non-battery mini pump will light-up after first few strokes and will keep luminating for 5 seconds after last stroke. The on-demand power comes from magnetized piston sliding in the copper wires wrapped barrel. It pumps air and also generates power without any additional load. A true definition of "1 stone 2 birds".
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