Small: Fits wrists 14 – 16 cm
Sensors and Components
Optical heart rate monitor
Ambient light sensor
Backlight for low light visibility
When using bike tracking, always pay attention and mind the rules of the road.
Wireless sync dongle
Surge has been tested up to 5 ATM meaning it is sweat, rain and splash proof. However, the device is not swim proof. We also recommend taking Surge off before showering because, as with any wearable device, it’s best for your skin if the band stays dry and clean.
Surge’s wristband is made of a flexible, durable elastomer material similar to that used in many sports watches. Surge also has a surgical-grade stainless steel buckle.
Like all heart rate monitoring technologies, accuracy is affected by physiology, location of device, and different movements. Learn more about wear during workouts.
Battery and Power
Battery life: last up to 7 days
GPS Battery life: last up to 10 hours
Battery type: Lithium-polymer
Charge time: One to two hours
Radio transceiver: Bluetooth 4.0
Operating temperature: -20° to 45° C
Maximum operating altitute: 9,144 km
Tracks 7 days of detailed motion data – minute by minute.
Tracks daily totals for past 30 days
Stores heart rate data at 1 second intervals during exercise tracking and at 5 second intervals all other times
Sample rate for GPS is 1 Hz
Surge syncs automatically and wirelessly to tablets, computers and 200+ leading iOS, Android and Windows smartphones using Bluetooth 4.0 wireless technology.
Syncing range: 6 m
Notifications: Text and call via Bluetooth 4.0
Music control: via Bluetooth Classic
Syncing to computers requires Internet connection and USB port
Syncing to mobile devices requires Bluetooth and Internet connection
Syncs with Windows Vista and later, Mac OS X 10.6 and up, iPhone 4S and later, iPad 3 gen. and later, and leading Android and Windows devices