The Nokia 105 TA-1691 4G 2nd Edition Dual Sim is a sleek black mobile phone with a 1.8-inch screen and single core processor. It features dual SIM capability, 4G connectivity, and a range of features including a TFT LCD, MP3 player, and loudspeaker. This unlocked device also boasts a storage capacity of 128 MB, 48 MB of RAM, and operates on the Android operating system. With a focus on energy efficiency, this Nokia phone has an A energy efficiency rating and is ideal for users looking for a reliable and efficient mobile communication device.