[Rechargeable Battery] The engraving pen has an powerful motor, which is suitable for small size cutting, powered by 300mAh lithium battery. It can be charged by USB cable, and can work for a long time after a full charge.[Adjustable Speed] The rotary tool has 3 adjustable speed (5000, 10000, 18000RPM) making it suitable for many different occasions. The lowest speed allows you to polish your nails safely, and the highest speed can also be used for metal engraving.[Ergonomic Design] Lightweight and compact design make the electric engraving pen easy to carry. The non-slip handle adds extra comfort and stable control, providing a comfortable experience for precision engraving performance.[Cordle & Portable] Wirele mini rotary tool with compact body and light weight design is comfortable in the hand. Small and lightweight body makes easy to handle for fine tasks and delicate work.Please do not place the electric grinder in a hot place above 40.[Wide Application] Cordle rotary tool can be used to engrave wood, stone, peaches, crafts, gla, ceramics, etc.(This model is a low-powered, non-specialist electric grinder, suitable for small engraving and grinding areas.) It can also be used for carving, sanding, grinding, drilling, cutting and so on.Product name: Rotary ToolKey Features1. Three speeds can be changed from 5000 to 18000 RPM, you can change the speed flexibly according to the working task or working material. It is perfect for both beginners and profeionals.2.Electric engraving pen has built-in overload protection can prevent short circuit and extend motors service life. High quality rotary tool, long service life, low noise, produce more stable and perfect results.3. Portable Engraving pen can be held in hand like a pen for precision work, easy to control and use, letting you perform intricate work smoothly and effortlely. Compact size also makes it easy to carry, so you can use it at anytime, anywhere.Specification:Material: plastic + metalColour: rose, silver (optional)Power: 8WVoltage: 3.6VBattery type: 501550 rechargeable lithium batteryBattery capacity: 300mAhCharging time: 30 minutes for 80%, 60 minutes for 100%Collet depth: 25MMClamping diameter: 3mm (suitable for all 3mm size grinding bits, reducer drills, carving knives etc.)Charging specification: USB - Type-C (for all USB port batteries)Motor speed: 1 speed 5000, 2 speeds 10000, 3 speeds 18000.Endurance: 1 hour or more unloaded at high speedCharging Notes:1. Engraving pen is normally delivered with a power level of about 50%, so it needs to be fully charged before first use.2. Power display: 1 light=30% 2 lights=31%~70% 3 lights=71%~full. Engraving pen will automatically turn off the power and turn off the light when fully charged.1x Engraving Pen1x Data Cable1x T-Shape Grinding Head2x 2.35 Shank Bar30x 2.35 Rotary Drill2x Drill Bit (1.0mm, 1.5mm)3x Sanding Discs (16mm, 20mm, 25mm)3x Stainle Steel Cutting Discs (22mm, 25mm, 32mm) USB Rechargeable,5000-18000RPM,300mAh Battery,Adjustable Speed