DIRECTIVE (EU) 2022/2380 OF THE EUROPEAN PARLIAMENT AND OF THE COUNCIL of 23 November 2022 (Part III) N Philips 4000 series SPK7448B/85, Right-hand, Optical, RF Wireless + Bluetooth, 1600 DPI, Black Philips 4000 series SPK7448B/85. Form factor: Right-hand. Movement detection technology: Optical, Device interface: RF Wireless + Bluetooth, Movement resolution: 1600 DPI, Buttons type: Pressed buttons, Buttons quantity: 4, Scroll type: Wheel. Power source: Batteries. Product colour: Black