2-in-1 Aluminum Alloy Ultra-Thin Bluetooth Keypad Calculator with LCD Display for PC MAC & Office 100 bpm-beats per minute and

100 bpm-beats per minute and the power output is about 230gf

which can prevent users from electric shock

More convenient to use - Additional buttons - Add 2 additional buttons on the mini body in order to improve a better usability

guide rings

2-in-1 Aluminum Alloy Ultra-Thin Bluetooth Keypad Calculator with LCD Display for PC MAC & Office 100 bpm-beats per minute andProduct Features: Supports MAC OS & Windows OS, an ideal time saver for data entry and accounting activities Compact, comfortable and convenient Accurate, eliminating the need to manually enter, highly improve efficiency Application in stock, notebook computers, banking, etc. Product Specifications: Type: Keyboard Keyboard Type: Membrane Keyboard Connect Type: Bluetooth Wireless Power Supply: USB System: Mac OS, Windows Size: 130 x 130 x 17. 5 mm 5.