All muscles and brains too: with the GBA-900 line, you can count on G-SQUAD strength with smartphone connectivity. Access your smartphone's GPS via Bluetooth® for precise acceleration measurement. Take initial measurements of certain intervals with your smartphone, then let the watch measure these distances autonomously and accurately. Get all the information you need: distance, speed, pace and calories burned, plus automatic lap measurements to track running times over defined distances. Download the app to control your watch settings, manage workouts and check your activity history. It displays five levels of training intensity and tracks your progress against your goals. Enjoy the sharpest display ever with the Memory in Pixel (MIP) LCD screen and Super Illuminator for guaranteed visibility even in the dark. Not only durable and elegant, but also comfortable. The GBA-900 strap is made of soft urethane for a quality fit.