Product name
Smart Stopwatch
Feature 2
1/1000 second display
Feature 3
count up max to 10 hours
Feature 5
The memory is saved to different groups
Feature 6
All data in different period can be recalled.
Feature 7
Connecting the APP on the phone
Feature 8
5.Support iOS 8.0 and Android 4.4 or above.
Feature 9
9.Water resistance: 3 bar