Lenovo Ideapad 100 Premium Laptop PC, 15.6-inch HD Display, Intel Celeron N2840 2.16GHz Processor, 4GB DDR3L RAM, 500GB HDD, DVDRW, Windows 10 15.6 in HD LED (1366 x 768) Display Intel Celeron N2840 2.16 GHz with Intel Burst Technology up to 2.58 GHz, Intel HD Graphics with shared graphics memory 4GB DDR3L 1333 MHz memory, 500GB 5400 RPM HDD, DVD RW Drive 802.11b/g/n High Speed Wifi, 10/100 LAN, Bluetooth 4.0, HD Webcam, 4 in 1 card reader, Realtek HD Audio, 1 USB 3.0, 1 USB 2.0, HDMI, Headphone output/Microphone input combo Windows 10 Home, 64-bit, 3-cell, 24WHr (up to 3 hours battery life)