Given reviews from Amazon, classify those review based on their content into two classes: Negative or Positive.

Q: This product worked for 4-5 times and the rotation stopped working. Batteries run out or lose power after 3-4 uses. I would read reviews before buying another one... I am looking into the Hitachi wand massager now and I believe I will buy it since is a power operated toy and will never run out of power.Not impressed with this product.

A: Negative
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Q: I've bought several air beds from various manufacturers. I bought one identical to this one 1 1/2 years ago. It was comfortable but lost air after 3 months. I justified this as the user may have not taken care. However, I now believe its the brand. This one would not inflate at all. I will not buy this brand again. I've had great life from a better brands.

A: Negative
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Q: It all depends on your purpose for these safety pins. I needed them for holding Velcro in place as the Velcro was pulling apart too easily. These safety pins bent as I tried to stab them into the material. The point is sharp, but the surface is rough. This rough point causes the material to cling to the safety pin rather than allow the pin to pass through easily.I would recommend the Dritz Quilter's Safety Pins. They are Nickel plated which makes them smooth and rust resistant.

A:
Negative
****