EPOCH 50 Features:

* 220 Channels for Multi-Constellation
* Integrated Transmit and Receive data link
* Compact and lightweight design
* RTK real-time positions, Static and PPK
* Network RTK positioning
* Spectra Precision Survey Pro field software
* Support for all GNSS data with Spectra Precision Survey Office software

Ranger 3XR Features:

* Internal 8GB Memory
* Built in 2.4 GHz robotic radio module for using the device with Spectra robotic total stations
* Integrated Bluetooth, Wi-Fi, Compass, GPS, WWAN and 5-megapixel camera 
* Integrated speaker and microphone screen
* Sunlight-readable touch screen display with LED backlight
* Runs with Windows Mobile 6.5 Professional and Survey Pro Software
* Accelerometer for detecting rotation and motion gestures 
* SD card slot. USB and 9-pin serial ports 
* 30-hour rechargeable, long life Li-Ion Battery
* Water resistant and dustproof to IP-67 
* Alphanumeric keypad

EPOCH 50 Specifications:

* Constellation : GPS/GLONASS/GALILEO/SBAS
* Frequency : L1/L2/L5
* Channels : 220
* Update Rate : 0.05 sec
* Data format : sCMRx, CMR, CMR+, RTCM 3.1
* Raw data output : Yes
* Real-time Accuracy - RTK mode (HRMS) : 1 cm
* Real-time Accuracy - DGPS mode (HRMS) : < 30 cm
* Real-time Accuracy - SBAS mode (HRMS) : < 50 cm
* Post-Processed Accuracy (HRMS) : 0.3 cm + 0.5 ppm
* Communications : UHF, BT, RS-232
* Unit size (mm / inches) : 19.0 x 10.7 x 20.0 cm / 7.48 x 4.21 x 7.87 in
* Weight : 1.34 kg / 2.95 lb
* Display : LED
* Memory : 64 MB
* Temp Min (°C) : -40°C / -40°F
* Temp Max (°C) : +60°C / +140°F
* Waterproof : IP66
* Shock & vibration : MIL-STD-810F
* Power (type - lifetime) : Li-Ion - 4 hours in RTK/Static mode
* Antenna Type : Internal
* Software options : Yes