AS-M010 Waterproof Optical Mouse with Scrolling Touchpad Wired Mouse PgDn and arrows) can not

PgDn and arrows) can not work but other number and symbol keys including ESC

and we also have a storage bag inside the package

Ergonomic forearm support could not support corner desk

Calculator Key and Functional Keys(home

0 technology provides a cable-free & clutter-free connection

AS-M010 Waterproof Optical Mouse with Scrolling Touchpad Wired Mouse PgDn and arrows) can notA stylish design and comfortable shape, rugged and waterproof, made of silicone Precise and smooth cursor movement, Scrolling Touchpad,superior performance 1000 dpi optical sensor with 3,000 frames second scan rate Compatibility: Microsoft Windows 10, 8, 7, Vista & XP Communication: USB2. 0 Button layout: Left & right buttons, performed by Scrolling Touchpad Dimensions: 115(L) x 68(W) x 42(H) mm Protection level: IP68 Approvals: CE, FCC, RoHS & WEEE