With pre-release estimates placing the 3DS's battery life at somewhere between three to five hours per charge with 3D engaged.Depending on how you use your 3DS, the built-in battery could last as few as two and a half hours or up to roughly four and a half hours per charge.Nintendo, undoubtedly recognizing the shortcomings of the battery, ships each unit with a charging dock, which allows users to simply drop their 3DS into place and recharge.
The glasses-free 3D is the biggest selling point of the 3DS.A slider along the right side of the display allows users to fine tune the level of depth.
Sixteen titles will launch alongside the Nintendo 3DS. It's a strong line-up from the perspective of genre variety. Racing, fighting, puzzle, sports, action, strategy… many core game types are represented, plus it's a healthy balance between software for players young and old, hardcore and casual.
Video : YouTube - Nintendo 3DS Video Review