Battery working only ,Non-operation 15 seconds LED Screen into sleep
mode,then press any buttons (except the laser button) wake up the LED
screen again .When Power OFF ,the lithium battery still can memory the
time before.
3- Once Battery/Voltage Lower than 3.6V, LED Screen will start to flash.
TECHNICAL SPECIFICATIONS
•
Time: 12 or 24 hour format.
•
"Snooze" function (repeat).
•
Uses rechargeable batteries (supplied).
•
Recharges by USB cable (supplied).
•
Output power: DC 5 V.
•
Dimensions: 7.62 x 10.2 x 9 cm.