Logitech Wireless Trackball M570

Key Features.

• Trackball comfort: Sculpted shape supports your hand and stays in one place—move the cursor without moving your arm
• Work and play anywhere: Get smooth, precise cursor control wherever you use your trackball—your desk, couch, even your bed
• Long battery life: Go for up to 18 months without changing the included AA battery* (*Battery life may vary based on user and computing conditions)
• For Windows or Mac OS: Robust 2.4 GHz wireless connection lets you control your laptop, desktop computer or home theater PC wirelessly from up to 30 ft. away 

1 Year Warranty.