Convenient for mountain climbing and hiking. A multi-functional carabiner with a COB light and thermometer. The LED light uses a COB light, with a maximum brightness of 25 lumens. With a carabiner, you can attach it to a backpack, etc., for portability. Size: Approximately width 40 x depth 15 x height 80mm Weight: Approximately 36g Material: (Body) Aluminum alloy Batteries used: Lithium-ion battery CR2032 x 2 Light modes: High / Low / Strobe * See the product description on the back of the image. Please check the images for other product details. Items will be shipped in simple packaging. Thank you for viewing. Thank you very much.