Note: The packing list does not include batteries. You need to prepare two No. 7 batteries for use. Specification: Product Name: 68-key dual mode2.4G+BT5.0 Wirele Mechanical Keyboard Applicable models: general Type: Mechanical keyboard Shaft body: blue/red switch Number of keys: 68 (keys) Connection with computer: USB+Type-C Dual purpose receiver Whether to support plug and play(hot swap): full key hot plug mechanical shaft Key conflict: 19 key has no impact Whether there are multimedia function keys: Yes Shortcut key: yes With or without hand rest: no Waterproof function: support waterproof Key technology: mechanical shaft Whether to support ergonomics: support Working voltage: 2*AAA Size: 309 X 100 X 38mm Transmiion distance: 10m Bluetooth version: Bluetooth 5.0 supports Windows 8 or higher Wirele connection: USB2.4G wirele XP/Vista/Win7/WIN8/WIN10 Features: 1. Dual mode 2.4G+BT5.0 Wirele Mechanical Keyboard 2. USB+Type-C Dual purpose receiver, can connect Mobile phone, computer and ipaid tablet. 3. blue/red switch mechanical switch ; 4.hot swapDIY your switch. 5.68 key arrangement; 6. three-color keycaps; 7. Support ergonomics; Package List: 1*2.4G+BT5.0 Wirele Mechanical Keyboard 1*USB+Type-C Dual purpose receiver 1*Instruction