[Curved and Split Ergonomic Keyboard Structure for Natural Typing] 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] 107 keys with 17 multimedia shortcut keys, numeric keypad and LED indicator lights, making your 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. Ergonomic DELUX-SPLIT KEYBOARD GM901D, Wireless, with 2.4G, USB and BT (+ BT1 BT2), AAA Battery, Soft Palm Rest for Windows and Mac