Features: The WAYLLSHINE red light flashlight is specially designed as astronomy flashlight, astronomy red light is very useful(for reading charts, finding dropped items, avoiding power cords¡­), with this red flash light, aviators, astronomers who want to retain their night vision would benefit from this red LED flashlights. This red flashlight is also specially designed for observers and hunters, night observation or hunting is effective but hard to find the target, if you use the white light, animals will hide from you, you are not able to watch their natural behavior at night, so, this flashlight red light is very helpful to find the animals in the dark, help you watching turtle, and the reptiles, also this tactical flashlight red light can help you hunt the games like hogs, fox... The Red light beam can shoot more than 150 yard.; The red led light can be used for sending signal, asking help, warnings. TWO flashlight with red light are included in the package, you have EXTRA ONE led red flashlight for backup. Specifications: Emitter Type: High Power 3535 Chip Emitter Red LED Light Beam Color: Red (True Red Light, Not red lens flashlight or red filter flashlight) Light Wavelength: 620nm-625nm Modes: 3 Modes, High, low, strobe Service Life: 10,0000 hours Voltage Input: 1.5V-3.7V Battery Configuration: one 1.5V AA Size battery, or other rechargeable battery as the AA battery Size but the max Voltage input is 4V. (battery is not included, we recommend to buy AA battery) Body Material: Aluminum Alloy Flashlight House Color: Red Weight: 60g/2.1OZ Size(Length*Diameter): 3.5"*0.8"/9CM*2CM Package Includes: 2 X 3-mode red light flashlight