Model - Rapoo X1900, Series - Regular, Style & Size - Regular Big, Type - Wireless Keyboard & Mouse Combo, Interface - USB, Language (English) - Yes, Language - English & Bangla, Language (Bangla) - Yes, Lighting - No, Mechanical (Key) - No, Mouse, Touchpad - Keyboard & Mouse, Wheel - Yes, Max DPI - 1000 DPI, Tracking Type - Optical, Battery Type - AA, Battery Qty - 1 x Keyboard, 1 x Mouse, Weight - 503 gm, Color - Black, Specialty - Wireless Keyboard & Mouse Combo with Bangla, Media control, Fn keys give quick access to functions like media player, homepage, volume adjustment, etc, 1000 DPI tracking engine, Enjoy accurate and smooth cursor control with the 1000 DPI invisible tracking engine, Up to 12 months battery life, Plug-and-forget NANO receiver, Plug-and-forget NANO receiver So small and unobtrusive, can plug it into a USB-port and forget about it, No more worries about lost receivers, Others - Color: Black, Mouse Resolution: 1000 DPI, Part No - X1900, Warranty - 2 years, Country of Origin - Hong Kong, Made in/ Assemble - China