Supa-Led Identify Valuables 51 Led 5WSupa-Led Packaged as a complete outfit 51 Led's storage box included detector scorpion and forensic kit. Invisible UV marker 1. Unscrew the tail-cap, remove the battery holder and insert the batteries in the correct polarity as indicated on the battery holder. 2. Re-insert the battery holder in the flashlight and replace the tail-cap. 3. Use the on/off switch to operated the light as needed. 4. The yellow glasses improve visible contrast greatly, especially in low light or at night. additionally they protect your eyes. dependant on light level conditions these glasses can be highly beneficial in both increased vision and eye protection. Caution: This is not a toy. restrict it's use from minor children 1. UV radiation can be harmful. Avoid shining the UV light directly into eyes. 2. This is a powerful 51 led UV light, use of the included glasses is Supa-Led Identify Valuables 51 Led 5 WSupa-Led Packaged as a complete outfit 51 Led's storage box included detector scorpion and forensic kit. Invisible UV marker 1. Unscrew the tail-cap, remove the battery holder and insert the batteries in the correct polarity as indicated on the battery holder. 2. Re-insert the battery holder in the flashlight and replace the tail-cap. 3. Use the on/off switch to operated the light as needed. 4. The yellow glasses improve visible contrast greatly, especially in low light or at night. additionally they protect your eyes. Dependant on light level conditions these glasses can be highly beneficial in both increased vision and eye protection. Caution: This is not a toy. restrict it's use from minor children 1. UV radiation can be harmful. Avoid shining the UV light directly into eyes. 2. This is a powerful 51 led UV light, use of the included glasses is advised. 3. Use only good quality alkaline batteries in this flashlight. 4. If the light is stored for lengthy periods without use, remove the batteries.