The NIU GO 21 was announced at 2014, May. Released 2014, June. The Smartphone is released at Discontinued.The Smartphone is released at Discontinued.It has 32Mb 32Mb RAM.The device comes in 1 variants: 32Mb 32Mb RAM.The Smartphone has 105 x 44.9 x 14.2 mm (4.13 x 1.77 x 0.56 in) thickness . It comes in 6 color variants, which are Black, Orange, Gray, Red, Green, Blue.This device packs Li-Ion 650 mAh, removable.