Single item weights about 22g(0.78oz), and the total length is 145mm(5.7"), it is very suitable to carry on trip, and cool you temporarily outside. There are 6 colors for you in total. You may give some of them to your friends as presents. You may also keep them all to decorate your table or something else. There is a 5cm length of tube, which is super flexible. You may twist it into several shape. For example: the natural straight shape; U shape; L shape and Z shape. Meanwhile, there is only one step to install it: insert the motor shaft into the fan's center hole. Please take a note about that, don't insert the shaft deeply till the end, or the friction will prevent the fan from rotating, and then could damage the motor coils. The rated voltage is 5VDC and the corresponding speed is 1500 RPM. But with the noise level around 25dB. And the air it blows is not too strong and not too weak, just right for you. This portable USB fan is assembled with a 1220 DC motor and an integrated molding plastic, which are made from TPE. It won't hurt you at all even if you touch the fan when the motor is running. However, you'd better keep it away from the infants. If the fans are dead, they are totally recyclable,and could be disposable used.