Description: 1. One of the hardest parts of taking blood can be finding a suitable vein. Some patients are 'difficult sticks'. Their veins are either very small or deep, preventing health professionals from finding a site easily and quickly. 2. Repetitive needle sticks are painful for the patient and may also lower their confidence in the ability of the phlebotomist performing the stick. 3. While our this device to help you to find veins easily for smaller clinics or facilities, even for collectors and hobbyist, it is suitable for most of people for finding veins with the least sticks. 4. This one mode single mode red light flashlight is specially designed for night activties. 5. This night light flashlight is very helpful to find the animals in the dark, help you watch turtle, snakes, and the reptiles. Specifications: Item name: Red LED Flashlight Material: Aluminum alloy Shell color: Black Size: 9.5*2.9cm Bulb: 625nm red light led Lighting distance: Less than 50m Power supply: 3 AAA batteries(not included) Mode: Single mode, one on and one off Note: - There might be little error of size for manual measurement. - The colors deviation might differ due to different monitor settings, please kindly understand. Package Includes: 1 x Red LED Flashlight