Mode switch description:Use FN+Q = 2.4G (green light prompt)Use FN+W = BT1 (blue light 1 prompt)Use FN+E = BT2 (blue light 2 prompt)A: The operation mode is to switch modes by short pressingB: Long press for 5 seconds to enter pairing, (2.4G code pairing time is 10 seconds; Bluetooth code pairing time is 2 minutes)C: Enter sleep time for 30 minutesThe main performance parameters of the keyboard:a) Wireless working current: Less than 7mA; go to sleep without any operation within 30 minutes, current 10 uA; press the button to wake upb) Power-on mode: two switches at the bottom of the keyboard, (ON--OFF)c) Working voltage: 3.0Vd) Wireless transmission distance: Greater than 10 meters (without interference)f)Uses 2 AAA batteries (we do not ship batteries)19 keys without punch (Note: in 2.4G mode)Support 19 keys without conflict (Q.A.Z.W.S.X.E.D.C.B.Space.↑.↓.←.→.Tab.Alt-L/V.Ctal-L/F.Shift-L)Type: Green axis/Brown axis/Red axisMaterial:ABScolour:Black / WhitePackage Contents:1 x Mechanical KeyboardOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.