Create your own path!
Maximize training, maintain intensity and monitor calorie burn with automatic wrist-based heart rate monitoring. With continuous heart rate readings, Surge keeps you in the zone—all day and during workouts. The Surge lets you track every aspect of your training. Now you can record running, cross-training, hiking, cardio workouts and more, and use comprehensive workout summaries to measure your performance and gauge your improvements over time.
Sensors and Components:
- 3-axis accelerometers
- 3-axis gyroscope
- Digital compass
- Optical heart rate monitor
- Ambient light sensor
- Vibration motor
Built with eight-sensor technology and best-in-class battery life, Surge transitions seamlessly from work to workouts. Tracking real-time stats like steps, distance, heart rate, active minutes, calories burned and more, to keep you in the know, on the go.
Designed with advanced smartwatch features, The Surge lets you run your day, your way. Text and call notifications keep you on your game throughout the day, while music control helps you find the motivation you need to prepare for a big meeting or a big race.
Make the most of your day by getting more out of your night. Surge automatically monitors how long and how well you sleep. Plus, it has a silent alarm to make waking up easy.
It syncs automatically your data to PCs, Macs, many iOS devices and select Android phones without plugging in or pushing buttons. This gives you real-time access to your stats on the fitbit dashboard throughout the day. Syncing occurs automatically any time the Flex is within about 6 meters of the wireless sync dongle and is relatively motionless. The dongle plugs into your Mac or PC's USB port. Show Supported Devices.
The Charge is available in two sizes:
small - for wrists with an extent of 140–170mm
large - for wrists with an extent of 160-200mm