Upper arm areas are usually included in the massage range of the chairs. This is from the elbow upward. The remainder of the arm and hand are unfortunately not reachable by most massage chair units. Wrists will not benefit from most massage chairs at all. There are, however, some units on the market with special wrist panels that do enable this experience. The Relaxonchair featured earlier in our top 13 is one of them as its armrests massage the wrist areas.
Arm massage ability isn't an industry standard and would have to be specifically selected when purchasing a unit. Certain massage chairs will focus on the neck, body, and legs only. Thankfully wrist massage is growing in popularity, and many of the newer chair models are making sure to include this as a feature, unlike older models.