SIZE – This keyring is about 2.5 longFUNCTIONS – Doubling as a compass and thermometer (reads celsius & fahrenheit), this keyring is great for camping, hiking, climbing, hunting, backpacking, survival and for your emergency kitPORTABLE – This compass is compact and small in size but big in utility. It is small enough to put on your key ring, store in your handbag, purse, or pocketHIGH-QUALITY AND DURABLE – Dont let the mini size of this portable compass and thermometer keychain throw you off, this is as durable a product as they come. As a gift to adults, kids, campers, hikers, this product is sure to impress