Logicool MX ERGO Wireless Trackball Mouse MXTB1d Ergonomic design that reduces wrist strain by 20%. Ideal for long hours of telework and creative work. Angle adjustment (0° to 20°) maintains a natural posture, and quiet operation enhances concentration. A standard model highly rated in X reviews as "less tiring" and "the best." Immediate purchase OK! Condition/Purchase: Purchased new from Amazon 1.5 years ago, kept unopened at home as a spare. Selling because I purchased a new model. Included: • Box • Charging cable • Unifying USB receiver All complete and ready to use. Specs: • Connection: Bluetooth / 2.4GHz (connects to 4 devices simultaneously) • Battery: Rechargeable (lasts 4 months) • Tracking: Optical trackball (DPI 320-440) • Color: Graphite • Other: 8-button customization (compatible with Logicool Options) Ideal for wrist pain and tenosynovitis prevention. Recommended for telework and desk work. Feel free to ask any questions. Ships within 1-2 days. #Logicool #MXERGO #TrackballMouse #Ergonomic #Telework