Specifications of the portable electric dot pen machine for dot engraving Device Name: Portable Electric/Pneumatic Engraving Machine Marking Type: Electric Dot Marking Key Components: Motor, Marking Head Key Selling Point: Easy to Use Power Source: Battery Operated (21V / 6000mAh) Operating Voltage: DC21V Engraving Needle Frequency: ≤ 50Hz Marking Area: 120 × 30 mm Marking Speed: 1.5 characters/sec Marking Depth: 0 to 1 mm (depending on material type) Marking Direction: 360-degree angle adjustment Engravable Materials: Metals, Copper, Aluminum, Iron, Steel Dimensions (L × W × H): 350 × 252 × 210 mm Power Consumption: ≤ 300W Operating Temperature: -10°C to 40°C Operating Humidity: Up to 90% (non-condensing) Portability: Portable battery-powered design, easy to use Control System: Touch interface with computer software Cooling System: Air cooling Country of Origin: China Videos