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Cob Keychain Light is a small, portable light that is designed to be attached to a keychain or bag for convenient use. It typically features a compact design and is made from durable materials Like aluminium alloy.The "Cob" in Cob Keychain Light refers to the type of LED technology used in the light. Cob stands for "chip on board", which refers to a new type of LED technology where multiple LED chips are mounted together onto a single circuit board. This allows for a brighter and more uniform light output compared to traditional LEDs.Cob Keychain Lights are often powered by small batteries such as button cell batteries, which provide a long-lasting and reliable power source. They typically have a simple on/off switch or button, and some models may offer multiple lighting modes such as high, low, and strobe.One of the main benefits of a Cob Keychain Light is its portability and convenience. It can easily be attached to a keychain or bag, making it readily accessible when needed. It is also useful for illuminating small spaces or objects in low-light conditions, such as unlocking a door or finding small items in a dark area.Overall, a Cob Keychain Light is a handy and practical tool for everyday use, offering a bright and reliable light source in a compact and portable package.