Product Name: Logicool MX MASTER 2S with high-precision sensor and multi-function buttons. Condition: Used for about 2 years. Operation has been confirmed, and all buttons and scrolling function normally. Used in a non-smoking, pet-free environment. All accessories are included. Features: - Easily switch between up to 3 devices (FLOW compatible) - Bluetooth connection supported (no receiver required) - Comfortable ergonomic shape, ideal for long hours of work - Equipped with a high-precision Darkfield laser sensor (can be used on glass surfaces) - Model Name: MX MASTER 2S - Brand: logicool - Accessories: USB cable - Color: Black - Function: Connectable to 3 devices Thank you for viewing.