Features:3-in-1 instrument restringing tool: string winder + string cutter + bridge pin remover.Motorized string winder and reliable string cutter, easy operation, saving time and efcompatiblet.The unique shape of the puller works easily and pleasantly without any guitar bridge damage.Built-in rechargeable li-ion battery, charging via the included USB cable.Compact and lightweight design, convenient to store and carry around.compatibleable compatible various string instruments like guitar, bass, mandolin, ukelele, etc.Specifications:Color: White + BlackMaterial: PlasticPower Supply: Built-in Li-ion Battery 3.7V 750mACharging Method: USB DC 5VUSB Cable Length: About 1 MeterItem Weight: 150g / 5.3ozPackage Size: 25 * 15.5 * 5cm / 9.8 * 6.1 * 2inPackage Weight: 287g / 10.1ozPackage List:1 * Restringing Tool1 * USB Cable1 * User Manual (English)