Dimensions

• Diameter: 36.6 mm (1.44 in), thickness: 10.6 mm (0.42 in)
• Weight 9.4 g / 0.33 oz with battery
• Water resistant to 30 m/100 ft

MCU

• Nordic Semiconductor nRF52832 comprising 32 –bit ARM® Cortex®-M4 with 64 kB on-chip RAM and 512 kB on-chip FLASH
• Integrated Bluetooth Low Energy radio, 2,4 GHz

Memory

• 128 MB (maximum useable capacity ~100-125 MB, depends on recording data rate)

Sensors

• Accelerometer, range :±2/±4/±8/±16 g full scale, sampling frequency: 12.5/26/52/104/208/416 Hz
• Gyroscope, range: ±125/±245/±500/±1000/±2000 dps full scale, sampling frequency: 12.5/26/52/104/208/416 Hz
• Magnetometer, range: ±49 gauss full scale
• Heart rate, beats/minute, RR intervals (1ms resolution)
• 1-Channel ECG, bandwidth 0.5-40 Hz, sampling frequency 125/128/200/250/256/500/512 Hz

I/O

• Led (red) on the front
• Debug UART, debug I/F, power & ground (inside the battery slot)

Energy source

• CR 2025 coin cell battery (user replaceable)

Software

• Easy to use C++ Movesense Device API
• iOS and Android libraries with wireless firmware update capability
• GNU tool chain for embedded ARM

Approvals and compliances

• CE, others coming
• Conforms REACH, RoHS
• Bluetooth 5.1

Patents

• US 13/071,624, US 13/832,049, US 13/832,598, US 13/917,668, US 13/397,872, USD 667,127, US 8,386,009, US 8,750,959, US 8,814,574, US 8,886,281, others pending