Product specifications
Device
Model No.
J-57B/K/T
Size (thickness)
15.8mm
Weight
Approx. 41 g
Waterproofing performance
Water resistant at 5 barometric pressures
Maximum usage time
Up to 30 days
*1,5
Up to 2 days
*2,5
Up to 4 days
*3,5
Up to 10 days
*4,6
Operating temperature
-5 to 50°C
Maximum measurement time
Approx. 10 hours
Maximum number of daily activity records
Current day plus past 6 days
Maximum number of records
64
Number of lap records
Maximum of 200 per split
Total maximum of 512
Heart rate measurement
Pitch/Stride measurement
Display
range
Distance/Lap Distance
0.000 to 999.99 km/0.000 to 999.99 mi
Pace/Lap Pace/Average Pace
0'01'' to 30'00''/km, 0'01'' to 45'00''/mi
Split/Lap time
0:00'00" to 13:00'00"
Pitch/Average Pitch
0 to 255spm
Stride/Average stride
0 to 255cm / 0 to 100inch
Steps
0 to 999999stp
Calories Burnt
0 to 9999kcal
HR
30 to 240bpm
Estimated end time
0:00'00" to 23:59'59"
Estimated end distance
0.000 to 999.99km/0.000 to 999.99mi
*1
Clock display (Track Activity disabled, Auto Sleep enabled, Auto Search disabled, and Bluetooth disabled)
J-57 User Manual
Appendix
85
