[Curved and Split Ergonomic Keyboard Structure for Natural Typing Posture] Human hand-friendly, designed by following human hands natural posture, compared with traditional keyboard, typing in a comfortable arm angle instead of contracting the arm to awful typing posture, reducing hands and wrists strain and shoulder pain.[Dual Mode and Multi Devices Connection] 2.4G with USB receiver and BT 5.0 with 2 channel (BT1 and BT2), use with up to 3 devices, easy installation and in-fly switching between different devices.[Work Better and More Efficiency] The ergo keyboard with 17 multimedia shortcut keys, numeric keypad and LED indicator lights, helps to work more efficient.[Built-in Pillowed Wrist Rest with Skin-friendly Synthetic Leather] Place your hand above it, lift from the ground and support the palm to keep the hands in the same level with keyboard rather than having to bend the palm or paying more effort to keep the palm lifted.[All DELUX products include 12 months warranty and free lifetime technical support] [Wide Compatibility] Compatible with Window 7/8/10/ Mac OS. (Warm Tips: Compared with traditional keyboard, with unique ergonomic vertical design, it may take a few days to get used to use it.) Product Description DELUX Ergonomic Keyboard Series Wireless Wired Palm Rest Detachable Fixed Fixed Fixed Fixed Multi-Device 1 3 3 3 3 Highlights Feature 2 USB Passthrough Dual Mode With Backlit OLED Screen Display Full Size Layout Specifications Version: DELUX GM901D wireless ergonomic keyboardDimension: 449.5(L)*234(W)*47.8(H)mmNet Weight: About 0.88kgKey Switch: Membrane KeyboardConnection: 2.4G wireless(come with USB receiver) and BT 5.0 (BT1+BT2), use with up to 3 devicesBattery: 2*AAA battery (not included)Key Life: >8 million timesOperating System: Compatible with Microsoft system/Mac OS/Win 7/Win 8/Win 10/Win 11 Package Included: 1 x DELUX GM901D ergonomic keyboard1 x User manual Track Page Views WithAuctiva's Counter