Dorcel トレーニングボール

The 16 vibration modes are surprisingly adjustable, and the soft silicone coating made the first few sessions much more comfortable than I feared. Charging takes a solid hour and a half, but the hour of run time is plenty for what I need it for.

The charging time felt long at 1h30, but the 5 progressive weights let me start light and build up gradually, which made the whole thing surprisingly comfortable. The splashproof silicone is easy to clean, and the single vibrating ball gives a nice, focused buzz without being overwhelming.

The 16 vibration patterns are still a pleasant surprise a week in, and those five weight levels make it easy to ease up or push yourself. It's splashproof, so cleanup’s simple, and the battery seems to hold right around that claimed hour.