Theragun mini™ 2nd Generation Hand-Held Massager Theragun mini™ 2nd Generation (1248580_EA) 1/EAAt 5. 55 x 4. 92 x 1. 93 inches, Theragun Mini is a small hand held massager that fits conveniently in your purse, backpack or gym bag so you can get the relief you need, wherever you go. The key to true deep muscle treatment is a precise amplitude, i. e. how far the arm or shaft of the device extends and retracts to reach the body and deliver percussion: The Theragun Mini has a 12 millimeter amplitude for deeper, longer lasting relief. Ergonomic