Never really used this is a robotic smart arm, if you want to know more about the brand you can research them. This is for a left arm only can't be used for the right arm. This is a very expensive and cool prosthetic arm, comes with an iPod that has an app for the arm where you can select some hand gestures through the app. The arm is fully functional and works accurately, I do not accept returns, will send a video if necessary of arm working. The arm doesn't come with a charger, what i have in the images is all you will receive. If you have any questions feel free to ask. I'm in desperate need for some financial support, at this time this is all I have left and want to make the best of it. The arm is well worth over 100,000 I just really need the money unfortunately, thanks for the time and consideration.