These mini flashlights are great for your keys. They give enough light to help you see while using them at night. Review is in video below. Each keychain already has batteries included. The lights are LED. They are slim design and can fit in your pocket or purse. They make great gifts or stocking stuffers.
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Disclaimer: I received this product /at a discount rate in exchange for my honest and unbiased review. All opinions are based on personal use and are not in any way influenced by the seller.