Features: 3-in-1 instrument restringing tool electric string winder + string cutter + pin remover. Motorized string winder and reliable string cutter easy operation saving time and effort. The unique shape of the puller works easily and pleasantly without any guitar damage. Built-in rechargeable Li-ion battery and comes with USB charging cable. Compact and lightweight design convenient to store and carry around. Suitable for various string instruments like guitar bass mandolin ukulele etc. Specifications: Color: White + Black Material: Power Supply: Built-in Li-ion Battery 3.7V 750mA Charging Method: USB DC 5V USB Cable Length: About 1 Meter Item Weight: 150g / 5.3oz Package Size: 25 * 15.5 * 5cm / 9.8 * 6.1 * 2in Package Weight: 287g / 10.1oz Package List: 1 * Restringing Tool 1 * USB Cable 1 * User Manual (English)