specification:

1,Case dimension:11X4.8X1.3cm

2,Display usage:total 9 digital display days,hours,minutes,and seconds

3,Frame:ABS

Function:

1,Total 9 digital display show 3 digital days and 6 digital HH:MM:SS countdown,display format is DDD HH MM SS

2,When it countdown to 00:00:00,it will subtract 1 from left days.

Technical norms:

1,Time Format: 24hrs

2,Clock Precision: less than 2 seconds on a daily basis.

3,Power: battery.