This cordless hot/cold massage gun was rated The Best because it outperformed all other models that cost under $200 in tests by the Hammacher Schlemmer Institute. It was found to be the easiest unit to use and the most effective at producing hot and cold massages. Unlike lesser massage guns that were uncomfortable to hold and had hyper-sensitive or confusing control panels, The Best unit was “perfectly sized” for hands and had simple to operate understandable buttons. It also earned the highest marks for hot/cold massages due to its variety of temperature settings (three hot, three cold) while other models only offered one setting of each. Its hot massages were described as “very relaxing” while lesser units provided “no heat at all” or “took too long to heat up”. It has five speed settings and five attachment heads (fork, bullet, five-point, ball, and hot/cold). Includes metal case. Charges via USB-C. 6" L x 2" W x 6" H.