This is B-pulse: therapeutic bilateral stimulation tools designed for all ages. About the size of a wristwatch, B-pulse features two wireless units that work in harmony to produce alternating left and right vibrations. By engaging both sides, B-pulse taps into the body's natural calming mechanism with the science of bilateral stimulation. B-pulse is ideal for both Play Therapy and EMDR, including processing and resourcing. Bluetooth control from the iOS and Android app allows you to operate B-pulse wirelessly from your smartphone, finetune vibrations and save settings for later. Built to withstand water and sand, B-pulse is built for Sand Tray therapy and easy cleaning between sessions B-pulse also includes a dual magnetic USB cable for convenient charging. Get ready to meet your new BLS solution. WARRANTY INCLUDED: For returns, exchanges, questions or concerns, please contact us directly at Support@BumbleBLS.com