Fitbit Zip
Tech specs 
Size3.6cm x 2.8 cm x 9.7 cm (H x W x D)
MaterialThermoplastic. The clip is made of silicone and metal.
ChargingNo
Battery3V coin battery
Battery life4-6 months
Water-resistanceSweat, rain and splash proof.
Weight8 grams
Sensor3-axis accelerometer
DisplayLCD
Screen sizeN/A
ColorsBlue, Magenta, White, Charcoal, Lime
Other
Activity tracking 
StepsYes
DistanceYes
CaloriesYes
ActivityYes
Floors
Sleep
Heart rate
Vo2Max
Stress & recovery
UV exposure
Skin temperature
Galvanic skin response
GPS
Running features
Swimming features
Smartphone notifications
Other Clock
Links 
View onAmazon | Best Buy | Target | eBay
Amazon US rating4.0 out of 5 stars
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