wGT3X-BT | ActiGraph Wearable Devices

The wGT3X-BT is ActiGraph’s legacy/original wearable device for continuous, real-world monitoring of activity, mobility and sleep:

Versatile Wear Locations: wGT3X-BT offers maximum wear position flexibility with options for wrist, waist, ankle and lumbar worn devices.
Ambient Light Sensor: Integrated light sensor that delivers lux values alongside motion data, providing insights into the relationship between the participant environment and activity and sleep behaviors.
Wear Time Sensor: Wear time sensor on the back of the device uses capacitive touch technology to automatically detect when a wrist worn device has been removed.

Declaration of Conformity

ActiGraph wGT3X-BT Specifications

The ActiGraph wGT3X-BT is optimized for everyday activity & sleep monitoring

Specifications

Battery Life: 25 Days
Data Storage: 180 Days / 4GB
Sample Rate: 30-100 Hertz
Dynamic Range: +/- 8G
Dimensions: 4.6 x 3.3 x 1.5 cm
Wear Location: Wrist, Waist, Ankle, Thigh
Weight: 19 grams
Communication: USB, Bluetooth® LE
Water Resistance: IPX7 (1 meter, 30 minutes)
Warranty: 1 year

Measurements

Physical Activity

Total Movement
Moderate to vigorous physical activity (MVPA)
Non-sedentary time
Step count
Energy Expenditure

Sleep

Total sleep time (TST)
Sleep efficiency (SE)
Wake after sleep onset (WASO)
Sleep onset latency (SOL)
Sleep fragmentation index