Suitable for engraving work on a wide range of materials such as metal, stone, ceramics, glass, wood or plastic High-performance Lithium-Ion battery (max 4V / 1.5Ah) High-quality, durable tungsten steel engraving tip Number of strokes adjustable in 6 steps Ergonomic pen shape with non-slip soft grip Display for number of strokes and battery charge level Automatic switch-off when not in use No-load stroke rate: 6000-19000spm Accessories: 1 tungsten steel engraving tip (pre-installed), 5 engraving templates (1x letters, 1x numbers, 3x symbols), 1x 1.5m USB-C cable (22 AWG) Power adaptor not included