Garmin fenix 3, Gray bundle with Heart Rate Monitor CHROMA DISPLAY - 1.2 sunlight-visible high-resolution color Chroma optically-bonded display WATER RATING - Water rated up to 10ATM / 100 meters1; suitable for swimming EXO ANTENNA - Omni-directional steel EXO antenna, when paired with GLONASS and EPO, provides an even faster fix and accurate position than GPS alone WIRELESS CONNECTIVITY- Utilize one or more Wi-Fi hot spots to automatically sync your data with Garmin Connect and update software (when in range) BATTERY LIFE - Rechargeable battery; up to 20 hours in training/GPS mode, 50 hours in UltraTrac mode, and 6 weeks in watch mode (depends on settings)