HITO Vibrating Travel Alarm Clock Timer w/ Dual Alarm, Blue Backlight Handy, easy and clear pocket travel clock timer w/ stand. LCD display: 1.4" x 2.7"; Clock: 3.1" x 3.5" x 1". Requires 2 AAA batteries (not included). Clock: time (12/24), dual alarms with no snooze, blue backlight (lights up after each press) for reading in dark. Timer: count up/ down timer (99h: 59m: 59s), ideal for cooking or medication reminder, etc. Alarm: music or vibration, going off with flashing red light. You could choose vibration and place clock under pillow, then it won't disturb your partner. Vibration is also helpful for those who are hearing impaired or deaf. Lock Function: You can lock the clock, avoiding accidental button presses. If you want to set, make sure you've unlocked the clock.