Feature: 1. Long working distance and big viewing angle, convenient to use. 2. Suitable for oral surgery operation, illumination while release hands. 3. There are several colors available, you can choose by your needs. 4. 10000 hours lifespan of the light bulb, can constant work for 5 hours. 5. With lithium battery and charger, complete accessory for reliable use. Specification: Condition: Brand New Item Type: Dental Head Light Optional Color: Blue, Black, Silver Plug Type: US Plug 100‑240VLED Light Power: 3W Battery: 1 x Lithium Battery 103450, 3.7V, 1800mAh Illuminance: 15000-30000LX Constant Working Time: 5 Hours Bulb Lifespan: 10000 Hours Input Voltage: AC100-240V 50-60HzWeight: 290g / 10.2 oz(approx.). Package List: 1 x Headlight 1 x Battery 1 x Charger 1 x Manual Note: 1. If it is used for the 1st time or not used for a long time, please charge it for more than 6 hours.2. Please use the allocation adapter to avoid damage to spare parts.3. Please use a soft wet cloth to cleaning the equipment, and then wipe with a dry cloth.4. Use alcohol to cleaning optical glass and adjust screw parts.5. Do not bathe or use this tool under high temperature and pressure.6. Pay attention to LED lights and avoid direct aim at the eyes.7. Do not look directly at the sun while wearing a magnifying glass.8. Keep the equipment dry and do not use it in any moist environment.9. Do not attach or wipe optical glass with hard or dirty objects.10. Waste batteries should be disposed of according to relevant regulations. Do not discard them.11. Put the equipment into the packing box after use.