105 x 85 x 37mm and 194g, this thing is so small and light it qualifies as pocket portable.
Large LED display for day or night use including back light option, runs of a rechargeable internal battery (NiMH), diameter large enough to test paintballs. You can set BB diameter, weight and convert output into feet per second, meters per second or even auto-calculate for kinetic energy (joules) This chrono can also measure the rate of fire.
Tough and ergonomic design, they even styled it to look like field equipment, this model is available in black and tan. both models come with charger, firing cone extension add on and instruction manual.
Comes with a British 3-pin plug for 230-240v sources (which is not suitable the the US and other countries).