Features:_x000D_1. It is used to point at any desired target on projection screen, video, etc._x000D_2. It can be used for presentation, teaching indicator, etc._x000D_3. Across the sky, leading you to find the stars in the clear nights._x000D_4. Lightweight, suitable for putting in your bag or handbags, easy and convenient to bring._x000D_5. This high quality laser pointer adopts the latest technology optics and microelectronics._x000D_6. Press-button switch at the bottom, no need to keep holding when use it._x000D_7. Designed with purple color light, which is easier for you to find the target and outlight the key point._x000D_8. Designed with a hang rope, convenient to bring and you don't need to worry about losing it._x000D_Specifications:_x000D_1. Surface: anodic oxidation_x000D_2. Size: 157 x 23 mm_x000D_3. Beam style: Continuous line._x000D_4. Power supply :1x18650 16340 Li-ion Battery. Not Included Battery_x000D_5. Wave length: 532nm_x000D_6. Laser range: 2005000m_x000D_7. Laser color: purple_x000D_8.Type of focusing: Adjustable_x000D_9. Body color: Black_x000D_10. Working voltage:DC3.0-3.7V._x000D_11. Preheat time: 3 seconds._x000D_12. Theoutput power:Package List:_x000D_1 x Laser Pointer_x000D_