TomTom Spark Music GPS Watch Black, S Technical Features: Multi-sport GPS tracking (speed, pace, distance, calories burned, duration), 24/7 activity tracking: steps, active minutes, calories burned, sleep, Training: Goals, Intervals, Laps, Race, and Zone modes, Music: 3GB storage of MP3 Backlight: yes, LED screen (144 x 168) Submersible: yes, 5 ATM (40-meter/130-feet) Includes: Spark GPS Music watch, charging cable, user guide