Technical Summary

Display	Backlit monochrome touchscreen LCD
Display Size	0.8 x 1.0" (20.9 x 24.4 mm)
Wireless Connectivity	Bluetooth 4.0
Wireless Range	20' (6 m)
GPS	Yes, 1 Hz sample rate
Sensors	3-axis accelerometers
3-axis gyroscope
Digital compass
Optical heart rate monitor
Ambient light sensor
Memory	Detailed motion data: 7 days
Daily totals: 30 days
Heart rate data storage rate: 1 second interval during exercise, 5 second interval at other times
Water Resistance	Splashproof, 5 ATM
Material	Stainless steel, flexible elastomer
Battery Type	Lithium-polymer
Battery Life	Up to 7 days
Battery Charge Time	1 to 2 hours
Operating Temperature	-4 to 113°F (-20 to 45°C)
Maximum Operating Altitude	30,000' (9,144 m)
System Requirements	PC: Windows Vista and later, USB port, Internet connection
Mac: OS X 10.6 and later, USB port, Internet connection

Fitbit FB501BKS Surge = Black Small