Features: 35 keys numeric keypad is suitable for laptop users, banking, financial security, business workers; The strong and secure bluetooth-compatible connection allows you to work efficiently with a 10m range. Built-in 300mA long-lasting rechargeable battery. Mc-308dm New Dual Mode Three Channel Wireless Bluetooth-compatible Notebook Keypad 35 Keys Mini Keypad; The bluetooth-compatible number pad is made of solid ABS and Aluminium materials for long-lasting use. Specifications: Material:ABS+Aluminium Color:Black,Silver;(Optional) Size:Approx.15x11.5cm/5.9x4.52in Number of buttons: 35 Keyboard life: 5 million times Keys response speed: 5ms Wireless/BT transmission distance: 10m Working voltage and current: 3.7V/2mA Model:MC-308DM Connector:2.4G+Bluetooth-compatible 5.0 Battery Type: Lithium Battery (300mAh) Package Includes: 1x Bluetooth-compatible Number Pad 1x USB Receiver 1x Charging Cable 1x Manual note: Please allow 1-2cm errors due to manual measurement,please make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item.