The Mantis X3 is the next evolution of the breakthrough MantisX.  Key features of the X3:
 
40% smaller
50% lighter
3x the battery life
4x the data rate 
Collecting thousands of data points per second, the X3 analyzes your shooting in real-time.  For both pistols and rifles, the X3 works with dry fire, live fire, airsoft/CO2, and simulated weapons systems.
Ships with:
Mantis X3 sensor
USB charging cable
Mantis X3 Case + Foam Insert
Quick Start insert
 
Dimensions: 1.3" x 1" x 0.75"  LxWxH