Sonic LV-3051-LB Toki Support Digital Timer Light Blue Sonic 4970116048011 (10 sets)

95 x 76 x 27 mm Can be used in cram schools and libraries, and lights up to notify you when the alarm is set to mute. You can increase your motivation and concentration by being conscious of your time. The timer-based learning method comes with an easy-to-understand guide. ◆Alarm: Switching between electronic sound and LED light/Alarm sounding time approximately 60 seconds ◆Setting time: Maximum 99 minutes 50 seconds for countdown, minimum 10 seconds, ◆Count up: Maximum 99 minutes 59 seconds ◆Alarm volume: approximately 55-65 dB ◆Power source: AAA batteries, mainly ABS