Epson ProSense 17Epson ProSense 307Epson ProSense 347Epson ProSense 367Epson ProSense 57
Tech specs 
Size47.0 x 47.0 x 15.5 mm47.0 x 47.0 x 13.4 mm47.0 x 47.0 x 15.5 mm47.0 x 47.0 x 15.5 mm47.0 x 47.0 x 15.5 mm
MaterialLens Material:Plastic
Band:Urethane
Lens Material:Plastic
Band:Quick-release Pro Silicone
Lens Material:Minerall glass
Band:Quick-release Pro Silicone
Lens Material:Sapphire glass
Band:Quick-release Pro Silicone
Lens Material:Plastic
Band:Urethane
ChargingUSBUSBUSBUSBUSB
BatteryLithium ionLithium ionLithium ionLithium ionLithium ion
Battery lifeGPS: Up to 13 hours 7 days activity tracking, 30 days Watch ModeGPS and HR: Up to 20 hours
GPS: Up to 24 hours
5 days activity tracking, 30 days Watch Mode
GPS and HR: Up to 46 hours
GPS: Up to 50 hours
7 days activity tracking, 60 days Watch Mode
GPS and HR: Up to 46 hours
GPS: Up to 50 hours
7 days activity tracking, 60 days Watch Mode
GPS: Up to 13 hours 7 days activity tracking, 30 days Watch Mode
Water-resistance5 ATM (50m)5 ATM (50m)10 ATM (100 m)10 ATM (100 m)5 ATM (50m)
Weight0.1 grams0.1 grams0.1 grams0.1 grams0.1 grams
SensorGPS, 3-axis accelerometerGPS, integrated heart rate sensor, 3-axis accelerometerGPS, integrated heart rate sensor, 3-axis accelerometerGPS, integrated heart rate sensor, 3-axis accelerometerGPS, integrated heart rate sensor, 3-axis accelerometer
DisplayLCD, 128 x 128 pixel resolutionEasyView display (Electronic Paper Display), reversible black-and-white, 240 x 240 pixelsEasyView display (Electronic Paper Display), reversible black-and-white, 240 x 240 pixelsEasyView display (Electronic Paper Display), reversible black-and-white, 240 x 240 pixelsLCD, 128 x 128 pixel resolution
Screen size1.1"1.1"1.1"1.1"1.1"
ColorsBlack, light green and light pink.Black, blue and white.Black.Black.Black, kale green and red.
OtherPLATFORM: N/A
PROCESSOR: N/A
MEMORY: Up to the lesser of 64 workouts or 2,000 laps
CONNECTIVITY: Bluetooth
PLATFORM: N/A
PROCESSOR: N/A
MEMORY: Up to the lesser of 248 workouts or 7,000 laps
CONNECTIVITY: Bluetooth
PLATFORM: N/A
PROCESSOR: N/A
MEMORY: Up to the lesser of 248 workouts or 7,000 laps
CONNECTIVITY: Bluetooth
PLATFORM: N/A
PROCESSOR: N/A
MEMORY: Up to the lesser of 248 workouts or 7,000 laps
CONNECTIVITY: Bluetooth
PLATFORM: N/A
PROCESSOR: N/A
MEMORY: Up to the lesser of 64 workouts or 2,000 laps
CONNECTIVITY: Bluetooth
Activity tracking 
StepsYesYesYesYesYes
DistanceYesYesYesYesYes
CaloriesYesYesYesYesYes
ActivityYesYesYesYesYes
Floors
SleepYesYesYesYesYes
Heart rateYesYesYesYes
Vo2MaxYesYesYesYes
Stress & recovery
UV exposure
Skin temperature
Galvanic skin response
GPSYesYesYesYesYes
Running featuresBasic Metrics: Distance, time, pace, speed, calories
Advanced Metrics: Stride length, cadence
Training: Intervals, race mode, customizable workout displays
Basic metrics: Distance, time, pace, speed, elevation change, calories.
Advanced metrics: Stride length, cadence, training effect, recovery, VO2 max, race time estimates
Training: Intervals, target pace, race mode, heart rate zones, metronome, customizable workout displays
Basic metrics: Distance, time, pace, speed, elevation change, calories.
Advanced metrics: Stride length, cadence, training effect, recovery, VO2 max, race time estimates
Training: Intervals, target pace, race mode, heart rate zones, metronome, customizable workout displays
Basic metrics: Distance, time, pace, speed, elevation change, calories.
Advanced metrics: Stride length, cadence, training effect, recovery, VO2 max, race time estimates
Training: Intervals, target pace, race mode, heart rate zones, metronome, customizable workout displays
Basic Metrics: Distance, time, pace, speed, calories
Advanced Metrics: Stride length, cadence, training effect, VO2 max, race time estimates
Training: Intervals, race mode, customizable workout displays
Swimming featuresBasic Metrics: Lengths, distance, pace, stroke detection, SWOLF, stroke count, stroke rate, caloriesBasic Metrics: Lengths, distance, pace, stroke detection, SWOLF, stroke count, stroke rate, caloriesBasic Metrics: Lengths, distance, pace, stroke detection, SWOLF, stroke count, stroke rate, calories
Smartphone notificationsYesYesYesYesYes
Other - Time/date, alarm clock, stopwatch, music control
- Sport Modes: Walking, Treadmill
- Time/date, alarm clock, stopwatch, music control
- Sport Modes: Walking, Treadmill, Triathlon, Indoor Bike
- Time/date, alarm clock, stopwatch, music control
- Sport Modes: Walking, Treadmill, Triathlon, Indoor Bike
- Time/date, alarm clock, stopwatch, music control
- Sport Modes: Walking, Treadmill, Triathlon, Indoor Bike
- Time/date, alarm clock, stopwatch, music control
- Sport Modes: Walking, Treadmill
Links 
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