http://www.denaspainreliefstore.com/index.html - Coach Jimmy K explains the differences between the DiaDens PCM3 and the newer Denas PCM 4. Explaining the menu formats, and preset mode advantages of the PCM4. Available at Denas Pain Relief Store Official USA Headquarters for Genuine Denas Products, Support and Training. For more information or answers to any questions about Denas Products call 503-395-4142
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