Product name: Engraving PenPower: 8WVoltage: 3.6VColor: rose, silver (optional)Battery type: 501550 rechargeable lithium batteryLi-ion battery capacity: 300mAhCharging time: 30 minutes 80%, 60 minutes 100%Clamping diameter: 3mm (suitable for all 3mm specifications of grinding head, taper drill, chisel, etc.).Charging specification: USB-Type-C (applicable to all USB port batteries).Motor speed: 1 speed 5000, 2 speed 10000, 3 speed 18000Endurance: more than 1 hour without load in high speed gearApplication: engraving, carving, polishing, lettering, waxing, punching, cutting, DIY production.Suitable material: for metal, wood, jewelry, walnut, peridot, body, magnolia, diamond, beads, gla, gemstones. [Rechargeable Battery] The engraving pen has an powerful motor, which is suitable for small size cutting, powered by rechargeable 300mAh lithium battery. It can work for 1 hours after 1 hour of full charge.[Adjustable Speed] The rotary tool has 3 gears adjustable speed 5000-18000 rpm making it is 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.[Cordle & Portable] Wirele mini rotary tool with compact body and light weight is comfortable in the hand. Small and lightweight body makes easy to handle for fine tasks and delicate work.[Ergonomic Design] Lightweight and compact engraving pen design make it easy to carry. The non-slip grip adds extra comfort and stable control. It is easy to help you complete a better carving proce.[Wide Application] The rotary tool can be used to engrave wood, stone, peaches, crafts, gla, ceramics, etc. It can also be used for carving, sanding, grinding, drilling, cutting and so on. Package inclduing:1x Engraving Pen1x Charging Cable30x 2.35 Rotary Bits2x Drill Bits (1mm, 1.5mm)3x Stainle Steel Cutting Discs (22mm, 25mm, 32mm)1x 2.35 Tool Holder Note:1. Please allow 1-3cm measuring deviation due to manual measurement.2. Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you!