SIGNATURE M650 Upgrade to smarter scrolling and more productivity with a mouse comfort-fit for your hand size and preference. You\u2019ll work faster \u2013 and more comfortably \u2013 than ever before thanks to SmartWheel scrolling, silent clicks, and a contoured comfort design. \nSMARTWHEEL SCROLLING Get line-by-line precision for documents \u2013 and super fast scrolling for long web pages. Automatically switch modes with the flick of your finger. \nA FIT FOR EVERY HAND Choose the right design for you \u2013 whether you have smaller or larger hands \u2013 for a perfect fit.\nCOMFORT SHAPE, PERFECT FEEL Work long hours in comfort with a contoured shape and soft-to-the-touch thumb area. \nCONNECT YOUR WAY Connect in an instant via Bluetooth Low Energy or Logi Bolt USB receiver. \nCUSTOMIZABLE SIDE BUTTONS Customize the side buttons for your favorite shortcuts with Logitech Options+. \nSILENT CLICKS Enjoy 90% less click noise and more focus thanks to Logitechs