Cold Laser Wrist & Cold Laser Wrist X are both advanced cold laser devices that help with purifying blood and Cold Laser Wrist X is the enhanced version of Cold Laser Wrist. Cold Laser Wrist X irradiates more beams of laser on users, thus it can heal blood diseases quicker and deeper. Moreover, Cold Laser Wrist X also has LEDs that provide exclusive functions such as disinfecting, dissolving blood clots and improving cellular metabolism. Cold Laser Wrist X also has an ear laser that can help with tinnitus.