Review on Premium Memory Wand Massager - Mini Cordless Handheld Power Massaging Wand with 8 Speeds 20 Patterns & One-Click Recovery - Rechargeable for Neck Back Stress Relief and Muscle Relaxation by Shannon Taylor

I was surprised at the overall build quality, the device is 90% silicone. It is not intended for immersion in water but appears to be very water resistant and can be safely used with a variety of lotions and after washing hands. The vibration is quite strong, at a minimal level it is impractical to use it on the upper part of the neck/skull muscles. The size is ok, good for constricting a specific stretched muscle, if you have a lot of general muscle soreness, you'd better use a bigger head.