. Hold up 6 messages in memory (1 one can store 512 characters, 2 to 6 can store 256 characters). Letters, numbers and simple images are supported. . 9 different speed and brightness. Just manual program with three onboard buttons. 1pc of CR2032 battery. more than 20 hours continuous battery life. . Various color for this item can be available. . Accessory: Specification and 1pc of CR2032.