1, waterproof 2, 1led plastic mini multi-function key chain 3, plastic ABS material 4, innovation, convenient, compact Product 2032 battery;1LED mini Keychain Light;Versatile: 100%light;off;50%light;off; flash; offProduct Dimensions:3cmX3cmX6cm;Product weight: 28g;Patent: the appearance 1 LED function multi-function mini plastic key light