What's the Specification Details? Clock dimension: 27''L x 7.4''H x 1.5''W (68cm L x 18cm H x 4cm W) Housing material: aluminum alloy Digits height & color: 5-inch (12.7 cm) Light source:LED (high brightness, long life-span) Power supply: 12V DC (110-260VAC power supply)Approval:CE & RoHS What's the Main Functions? How to make setting & use? (For advanced editable-settings, please refer to the user manual) 12/24H Real-time clock:format [HH:MM:SS], press [7] for clock mode, press[Edit] to enter current time, then press[Enter] to save and start, press button [4] to convert 12/24 hour formats. Countdown/up:format [HH:MM:SS], press [Timer 1] “DOWN arrow” for countdown mode, press [Edit] to fill in with wanted time, press [Enter] to save, press [Start] to begin, press [setup] to cease if needed. Press [reset] to restart. For count-up, press [Timer1] “UP arrow” firstly, and then follow the same. Stopwatch: format [HH:MM:SS], press [Timer 2] “DOWN arrow” for stopwatch countdown mode, press [Edit] to fill in with wanted time to begin, press [Enter] to save, press [Start] to begin, press [setup] to cease if needed. It can be stopped & restart at anytime. Press [reset] to restart. For count-up, press [Timer 2] “UP arrow” firstly, and then follow the same. What's Included in the Package? LED clock: 1 PC Adapter: 1 PC IR remote controller: 1 PC Tripod: 1 SET Instruction manual: 1 PC Important Cautions: The controller does NOT have AAA battery