Product Name: Two channels of cycle timers
Model: PS-399
Function description:
1. Cycle countdown: 2 groups, can be 2 groups of rotation cycle countdown, or single
   group cycle countdown,If the cycle number of times=1, it will not cycle. The range
   of the countdown setting is 0~99 hours, 59 minutes and 59 seconds. The number of
   cycles is 0~999 times.
2. Stopwatch function: It can be counted from 0 to 999 hours, 59 minutes and
   59.99 seconds.
3. The set countdown time can be saved for easy recall.
4. There is an alarm reminder function after the countdown, there is sound + flashing
   light or vibration + flashing light reminder, default one minute,  The length of
   the almarm may choose: 1 second, 3 seconds, 5 seconds, 10 seconds, 15 seconds, 30
   seconds, 45 seconds, 60 seconds;
5. There is a three-position switch on the side, you can choose sound, vibration,
   mute; there is also a two-position switch you can choose "Power On" or
   "Power Off".
6. There are magnets and brackets on the back, and spare hanging holes. Can be
   attached to a metal surface, placed on a tabletop or hung on a wall.
7. Battery: Two AAA batteries.

Specification properties:
Product size: 76 x 62.5 x 23.5 mm
Screen size: 61 x 29 mm
Net weight: about 78 g