Pocket Size: Weight only 29g, makes this small pocket bright flashlights can be easily put into your pocket or bag, convenient to take around. Super Bright: This portable pen light can light up a concentrated area with a bright and stable beam, making it ideal for up-close working. Waterproof: This waterproof pen light made of high performance aluminum alloy which is sturdy and durable, IPX4 rated can be using out in the heavy rain and snow. 3 Lighting Modes: This 2 AAA battery (not included) powered pen flashlight comes with high brightness, low brightness and flash mode for different purposes. Wide Applications: This compact flashlight is widely used in many circumstances. Perfect for working, repairing, camping, emergency survival, mechanic, nurses, doctors and outdoor sports.