
| Dimensions | 6 ⅜" x 4 ¼" x 1 ⅝" |
| Weight | 7lbs |
| Power Supply | AA battery x 1 |
Research Articles:
Jordan, S., Okonek, A. & Schot, P. (2016). Influence of Baseball Catcher Mask Design, Impact Location and Ball Trajectory on Head Acceleration. International Journal of Exercise Science, 9(5), 567-575.
Ringenbach, S. R., Albert, A. R., Chih-Chia (JJ), C. & Alberts, J. L. (2014). Acute Bouts of Assisted Cycling Improves Cognitive and Upper Extremity Movement Functions in Adolescents With Down Syndrome. Intellectual & Developmental Disabilities, 52(2), 124-135. doi:10.1352/1934-9556-52.2.124
Veligekas, P. & Bogdanis, G. C. (2013). Bilateral deficit in vertical jumping in pre-pubertal boys and girls. Journal of Physical Education & Sport, 13(1), 120-126.
Research Articles:
| Range | 0 - 1000s with millisecond resolution |
| Max Count Rate | 40Hz |
| Accuracy | 0.005% +/- 1millisecond |
| Power Supply | "C" cell x 4 |
| Battery Life | Approx.30 hours |
Research Articles:
For measuring hand grip strength in kilogram with counting function.
| Measurement Range | 0 to 99,999 steps |
| Memory | previous 7 days |
| Dimensions | 2 ½"(W) x 1 ½"(H) x 1"(D) |
| Power Supply | LR43 battery x 1 |
| Weight | 0.85oz (including battery) |
Research Articles:
A dual timer featuring a lap time/spilt time memory function.
Research Articles:
Dewhurst, S., Nelson, N., Dougall, P. K. & Bampouras, T. M. (2014). Scottish Country Dance: Benefits to Functional Ability in Older Women. Journal of Aging & Physical Activity, 22(1), 146-153.
Lockie, R. G., Jalilvand, F., Callaghan, S. J., Jeffriess, M. D. & Murphy, A. J. (2015). Interaction between Leg Muscle Performance and Sprint Acceleration Kinematics. Journal of Human Kinetics, 49(1), 65-74.

| Data Memory | 5 hours |
| Dimensions | 66(H) x 38(W) x 14(D)mm |
| Power Supply | CR2032 or CR2031H x 1 |
| Battery Life | 5 months |
| Weight | 22g |
Research Articles: