Features: 1. Used to point to any target on the projection screen, video and other screens. 2. Can be used for demonstrations, teaching instructions, etc. 3. With a starlight cap, it can display various wonderful patterns at night. 4. After removing the cap, it is a single-beam laser pointer. 5. Cross the starry sky and lead you to find the stars on a clear night. 6. Lightweight, can be put into a pocket or handbag, easy to carry. 7. This high-quality laser pointer adopts the latest optical and microelectronic technology. 8. With green light design, it is easier to find the target and illuminate the key points. 9. Made of aluminum alloy, it is more durable, and the handle is made of non-slip material to prevent the laser pointer from falling. 10. Equipped with a lanyard, it is easy to carry and there is no need to worry about losing it. 11. The end is designed with a waterproof seal to prevent water drops from entering. 12. Power saving: equipped with a button for locking the laser to avoid power loss-when the button points to the red dot = locked (green dot = unlocked). Warm Tips: 1. After installing the correct battery, please use the button to unlock the laser first, then press the button. 2. The laser pen is greatly affected by temperature. In winter, if the outdoor temperature is low, please preheat the laser pen for 5 minutes. 3. Avoid direct laser beam to the eyes. 4. Do not turn it on for a long time, otherwise it is easy to damage the bulb. 5. Children should operate the laser under adult supervision. 6. The laser has high power and the battery runs out quickly. Do not use the laser continuously for more than 2 minutes, otherwise it is easy to burn out from the inside. Please note: In order to pass the safety inspection, we indicate the power is less than 5mW on the label of all laser pens. The actual power of the laser pen exceeds 5mW. Thank you very much for your understanding. Specifications: Product Type: Laser Pointer Model: 303 Body Material: Aluminum Alloy Size: (Diameter) 2.316cm/0.916.30in (approx.) Power Supply: 1 18650 Battery Beam Type: Continuous Line Spot Size: 8000 hours at 6m Operating Voltage: DC=3.0-3.7V Warm-up Time: Less than 3 seconds Operating Temperature: +15~35℃ Storage Temperature: -10~40℃ Output Power: 5mW Quantity: 1 Set Remarks: 2. Please allow 0-1cm error due to manual measurement. Please confirm that you do not mind this before placing an order. 3. Due to the difference between different monitors, the picture may not reflect the actual color of the product. Thank you Package Included: 1 Laser Pointer + 2 Keys