diff --git a/src/logid/backend/hidpp20/feature_defs.h b/src/logid/backend/hidpp20/feature_defs.h
new file mode 100644
index 0000000..72de1e1
--- /dev/null
+++ b/src/logid/backend/hidpp20/feature_defs.h
@@ -0,0 +1,102 @@
+#ifndef LOGID_BACKEND_HIDPP20_FEATUREDEFS
+#define LOGID_BACKEND_HIDPP20_FEATUREDEFS
+
+#include <cstdint>
+
+namespace logid {
+namespace backend {
+namespace hidpp20 {
+    enum FeatureID : uint16_t
+    {
+        ROOT = 0x0000,
+        FEATURE_SET = 0x0001,
+        FEATURE_INFO = 0x0002,
+        FW_VERSION = 0x0003,
+        DEVICE_NAME = 0x0005,
+        DEVICE_GROUPS = 0x0006,
+        DEVICE_FRIENDLY_NAME = 0x0007,
+        RESET = 0x0020,
+        CRYPTO_IDENTIFIER = 0x0021,
+        DFUCONTROL = 0x00c0,
+        DFUCONTROL_V2 = 0x00c1,
+        DFUCONTROL_V3 = 0x00c2,
+        DFU = 0xd000,
+        BATTERY_STATUS = 0x1000,
+        BATTERY_VOLTAGE = 0x1001,
+        CHARGING_CONTROL = 0x1010,
+        LED_CONTROL = 0x1300,
+        GENERIC_TEST = 0x1800,
+        DEVICE_RESET = 0x1802,
+        OOB_STATE = 0x1805,
+        CONFIGURABLE_DEVICE_PROPERTIES = 0x1806,
+        CHANGE_HOST = 0x1814,
+        HOSTS_INFO = 0x1815,
+        BACKLIGHT = 0x1981,
+        BACKLIGHT_V2 = 0x1982,
+        BACKLIGHT_V3 = 0x1983,
+        PRESENTER_CONTROL = 0x1a00,
+        SENSOR_3D = 0x1a01,
+        REPROG_CONTROLS = 0x1b00,
+        REPROG_CONTROLS_V2 = 0x1b01,
+        REPROG_CONTROLS_V2_2 = 0x1b02,
+        REPROG_CONTROLS_V3 = 0x1b03,
+        REPROG_CONTROLS_V4 = 0x1b04,
+        PERSISTENT_REMAPPABLE_ACTION = 0x1bc0,
+        WIRELESS_DEVICE_STATUS = 0x1d4b,
+        ENABLE_HIDDEN_FEATURE = 0x1e00,
+        FIRMWARE_PROPERTIES = 0x1f1f,
+        ADC_MEASUREMENT = 0x1f20,
+        LEFT_RIGHT_SWAP = 0x2001,
+        SWAP_BUTTON = 0x2005,
+        POINTER_AXES_ORIENTATION = 0x2006,
+        VERTICAL_SCROLLING = 0x2100,
+        SMART_SHIFT = 0x2110,
+        HIRES_SCROLLING = 0x2120,
+        HIRES_SCROLLING_V2 = 0x2121, // Referred to as Hi-res wheel in cvuchener/hidpp, seems to be V2?
+        LORES_SCROLLING = 0x2130,
+        MOUSE_POINTER = 0x2200, // Possibly predecessor to 0x2201?
+        ADJUSTABLE_DPI = 0x2201,
+        ANGLE_SNAPPING = 0x2230,
+        SURFACE_TUNING = 0x2240,
+        HYBRID_TRACKING = 0x2400,
+        FN_INVERSION = 0x40a0,
+        FN_INVERSION_V2 = 0x40a2, // Is 0x40a1 skipped?
+        FN_INVERSION_V3 = 0x40a3,
+        ENCRYPTION = 0x4100,
+        LOCK_KEY_STATE = 0x4220,
+        SOLAR_DASHBOARD = 0x4301,
+        KEYBOARD_LAYOUT = 0x4520,
+        KEYBOARD_DISABLE = 0x4521,
+        DISABLE_KEYS = 0x4522,
+        MULTIPLATFORM = 0x4530, // Dual platform only?
+        MULTIPLATFORM_V2 = 0x4531,
+        KEYBOARD_LAYOUT_V2 = 0x4540,
+        CROWN = 0x4600,
+        TOUCHPAD_FW = 0x6010,
+        TOUCHPAD_SW = 0x6011,
+        TOUCHPAD_FW_WIN8 = 0x6012,
+        TOUCHMOUSE_RAW = 0x6100,
+        // TOUCHMOUSE_6120 = 0x6120, (Keeping this commented out until a better name is found)
+        GESTURE = 0x6500,
+        GESTURE_V2 = 0x6501,
+        G_KEY = 0x8010,
+        M_KEY = 0x8020,
+        // MR = 0x8030, (Keeping this commented out until a better name is found)
+        BRIGHTNESS_CONTROL = 0x8040,
+        REPORT_RATE = 0x8060,
+        RGB_EFFECTS = 0x8070,
+        RGB_EFFECTS_V2 = 0x8071,
+        PER_KEY_LIGHTING = 0x8080,
+        PER_KEY_LIGHTING_V2 = 0x8081,
+        MODE_STATUS = 0x8100,
+        MOUSE_BUTTON_SPY = 0x8110,
+        LATENCY_MONITORING = 0x8111,
+        GAMING_ATTACHMENTS = 0x8120,
+        FORCE_FEEDBACK = 0x8123,
+        SIDETONE = 0x8300,
+        EQUALIZER = 0x8310,
+        HEADSET_OUT = 0x8320
+    };
+}}}
+
+#endif //LOGID_BACKEND_HIDPP20_FEATUREDEFS
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