WORK IN YOUR COMFORT ZONE Minimize movement and maximize comfort with ERGO M575 - a wireless trackball with a sculpted ergonomic shape. With no need to move your arm around to move the cursor, your hand and arm stay relaxed. The smooth and responsive thumb control can be used anywhere - and since it doesn''t need to be moved - ERGO M575 is perfect for tight desk spaces.SHAPED FOR HANDS LIKE YOURS ERGO M575 has been designed and developed to ergonomically fit the shape of your hand. And with no need to move your arm around to move the cursor you''ll reduce fatigue in your hand and arm THUMBS UP FOR THUMB CONTROL Get on a more ergonomic track with exceptionally precise trackball control. Your thumb will glide across the smooth ball surface with total ease thanks to transparent finish coating. And the high-performance optical sensor matches great accuracy with ultra-low power consumption. MORE SPACE FOR ALL YOUR (AWESOME) STUFF ERGO M575 features a super compact footprint since it doesn''t move to control the cursor. It''s ideal for tight workspaces, or for those of us that have desks full of papers, personal items - and sometimes even a bowl of cereal. EASY CONNECT WITH WINDOWS® AND MAC With two ways to connect - via Bluetooth® Low Energy or the included USB receiver - ERGO M575 provides a powerful, reliable signal from up to 10 m away. Connect to either Windows or macOS and never worry about drop-offs or laggy connections. A DESIGN CHOICE YOU''LL FEEL GOOD ABOUT | QUALITY THAT LASTS ERGO M575 is durable and reliable. With Swiss engineering and end-to-end control of the production process, it''s designed to perform for more than 3 million quality clicks. MADE WITH RECYCLED PLASTIC The plastic parts in ERGO M575 include certified post consumer recycled plastic - 50% for Graphite and 21% for Off-White - to give a second life to end-of-life plastic from old consumer electronics and help reduce our carbon footprint. DESIGNED FOR POWER EFFICIENCY The innovative sensor performs its best with ultralow battery consumption. Stay powered up to 2 years on a single AA battery. RESPONSIBLE PACKAGING The paper packaging of the ERGO M575 comes from FSC™-certified forests. By choosing this product, you are supporting responsible management of the world''s forests. ADDITIONAL FEATURES | UP TO 24-MONTH BATTERY LIFE Stay powered up to 2 years on a single AA with the included Unifying USB receiver and up to 20 months using Bluetooth Low Energy. CONVENIENT CONTROLS Moving between documents or browser tabs is a breeze with large, easy-to-reach Back/Forward buttons. EASY TO CLEAN Should you need to clean your trackball, removing and wiping down the ball is a snap.