IASO is a FDA-registered, HSA/HRA/FSA eligible, drug-free cold laser device that you can wear whenever, wherever. It utilizes advanced low level laser therapy (LLLT) technology, which stimulates healing of body tissues and causes regeneration and relief from pain. Compact, lightweight, wearable and rechargeable, IASO also comes with adhesive patches and an arm band that you can wear on the go. Simply focus on what you are doing while IASO takes care of your pain. Features:- FDA-Registered & Drug-Free - Advanced Cold Laser (Low Level Laser) Technology - Compact, Lightweight, and Rechargeable - Wearable Device with Wrist Band and Hydrocolloid Adhesive Patches - Three Different Modes (Cold Laser, Cold Laser+Vibration, Cold Laser+Rhythmic Vibration) Device Dimensions: 1.9 x 1.9 x 0.5 inDevice Weight: 28 gLaser Wavelength: 650nm, 830nmLaser Power: Max 5mWPower Source: USB Charging (Provided) One Year Warranty:We’re proud of our product quality and we offer a one year warranty. For the best result, it is recommended to use IASO on a regular basis over a period of time. What’s in the Box:Single - 1 IASO,USB Charging Cable, Arm Band*, Hydrocolloid Adhesive Patches & User ManualDouble - 2 IASOs, Charging Cradle, USB Charging Cable, Arm Band*, Hydrocolloid Adhesive Patches & User ManualQuad - 4 IASOs, Charging Cradle, USB Charging Cable, Arm Band*, Hydrocolloid Adhesive Patches & User Manual *We recommend only using the arm band on your arms and it may disconnect when using in thicker areas, such as the leg or thigh.