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It sounds like you're referring to a keychain light power bank, which is a compact device that combines a portable power bank and a keychain light. These gadgets are small, multifunctional, and useful for people on the go. Here’s a breakdown of what they typically offer:Power Bank Functionality:These small devices act as a power bank to charge smartphones, tablets, or other small devices. The power capacity is usually smaller than standard power banks but is enough for emergency top-ups.The typical capacity can range from 1000mAh to 3000mAh, providing one or two extra charges for your phone.Keychain Light:They often come with an LED light, which serves as a small flashlight. This can be handy for finding keys in the dark or providing illumination in low-light situations.Portability:Since it's on a keychain, it’s highly portable, and you can carry it anywhere without much added bulk.Convenience:You get the benefit of two devices (flashlight and power bank) in one compact form, which is ideal for everyday carry or for emergency situations.Would you like recommendations or more details on how to use one?