Light will stay on for .. seconds, or until no key has been pressed for .. seconds. .. BREEZE A. MIO BREEZE AT-A-GLANCE User’s Guide + ECG accurate heart rate without a chest strap + Personalized percent of maximum heart rate display + Flexible timers + Easy to use D. WAKING UP My MIO Your MIO may be in sleep mode (with a blank display) when you first receive it. Hold START until you see blinking 12H or 24H to • activate your MIO and start setting it up. Setting time & date format:• Press + or –