We offer the Vision Spinners in 2 different battery sizes 900mAh and 1100mAh. The colors we offer for the 900mAh are rainbow, white and blue. For the 1100mAh we offer the colors rainbow and white.
On each battery there are four markings to indicate approximate output voltages at 3.3-4.8 volts but is adjustable throughout the entire voltage range. Just give it a spin to your desired output and you are ready to go.