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The DAVID Delight Pro provides a unique fusion of audio-visual entrainment (also known as brainwave entrainment) and cranial-electro stimulation (CES) with sophistication and simplicity. Learn More
Temperature indicator, credit card size in durable plastic. Liquid crystal square turns color as it is warmed by the finger. A color grid on the card compares the crystals color to Stressed, Tense, Normal or Calm. Ideal for referral or promotion. Learn More