Review on PERIKES Whisper Quiet Handheld Personal Massager with Powerful Vibration - Waterproof, Cordless for Neck, Shoulder, Back, and Full Body Massage - Ideal for Sports Recovery & Muscle Aches (Black) by Kyle Gilbert

The battery lasts very long and is POWERFUL on the maximum setting. Delivered in a nice bag with charger. I ordered this to relieve tension in my lower back muscles. However, the flexible head has a bit too much "give" which makes it a bit difficult to hit certain areas with the right amount of pressure. For the lower back you need something different, but I still use it for the neck. The settings can be changed to many different speeds and forces.