Brand – Havit, Model – Havit HV-KB278GCM, Style & Size – Regular Big, Type – Wireless Keyboard & Mouse Combo, Connection Type – Wireless, Interface – USB Dongle, Language (English) – Yes, Language – English & Bangla, Language (Bangla) – Bangla, Fingerprint Sensor – No, Number of Button – 104 Key, Scrolling Control – Wheel, Wheel – Yes, Max DPI – 1200DPI, Battery Type – AAA (Keyboard), AA (Mouse), Battery Qty – 2 x Keyboard, 1 x Mouse, Dimensions (WxHxD) – 444 x 139 x 22mm (Keyboard),  98 x 60 x 36mm (Mouse), Compatibility – Windows Supported PC & Laptop, OS Support – Windows, Color – Black, Others – Wireless technology: 2.4GHz, Wireless distance: 8-10m, Key life: 8,000,000 times (Keyboard), Key life: 3,000,000 times (Mouse), Warranty – 1 Year