The Pocket Pro II timer is an easy to use instrument for measuring shot time intervals and is well suited for personal practice or scoring matches. It fits nicely in your hand with the start button on the side. The powerful 105 dB buzzer transmits well through hearing protection. There is a separate shot sensor and buzzer for best performance. The large buttons are positioned with enough space for big hands. The intuitive menu and navigation is easy to learn, and remember. The device automatically turns off after 10 minutes of inactivity. The large clothespin style belt clip fits over your shooting belt. It is powered by one 9 volt alkaline battery, that is not included, for approx. 20 hours of use. 3 configurations of display. Colour is Gray