Product description TUNENGE S11-T IS YOUR ULTIMATE POCKET-SIZED PARTNER TO CONQUER THE DARKNESS. TUNENGE S11-T rides your keychain — 2.38 x 0.61 in, 0.53 oz. USB-C charging. 15h max runtime. IP66 waterproof, 1.5m drop-proof. Tail magnet sticks to metal for hands-free light — fix a pipe, check the engine, read a map. Midnight walks or blackouts? Previous page Next page Previous page Next page How do you use the S11-T keychain flashlight? Can you switch modes? keychain light has five switchable modes. Click to turn it on, press and hold to cycle through Moonlight → Low → Medium → High. It has mode memory, so when you turn it off and on again, it will return to the last mode you used. Click to turn it off What does this flashlight use for charging? Can the battery be replaced? What is the battery capacity in mAh? This flashlight charges via a standard USB-C cable. It has a built-in 300mAh battery that cannot be replaced. What are the dimensions of this keychain light? Is it easy to carry? The S11-T measures 2.38 x 0.61 inches and weighs 0.53 oz. It is specifically designed for portability and can be carried on a keychain or in a backpack, taking up very little space. About this item Small But Mighty: TUNENGE S11-T Keychain light. Packing 500 lumens and a beam reaching 278ft into an ultra-slim 2.38"x0.61" frame. Sleek Design & Intuitive Operation: The classic cylindrical body is ergonomically optimized for a comfortable grip and easy portability. Operation is simple—press and hold to cycle through Moonlight, Low, Medium, and High modes; triple-click to instantly activate strobe. With memory function, it automatically resumes your preferred setting every time you turn it on. Ultra-Fast Charging & Long-Lasting Battery: Equipped with a 300mAh lithium battery and a mainstream U