Frequently Asked Questions


We have developed a proprietary resonance technology called Natural Frequency Technology® that captures unique frequency signatures associated with the different states of being such as Sleep, Balance, and Energy. We then transfer these frequencies into our products. When worn on or near the skin, the body’s own bio-magnetic field harmonizes with the frequencies, promoting good sleep, creating a feeling of balance or feeling more energized.

Yes our Natural Frequency Technology has been clinically tested and published in peer reviewed scientific journals.


These published studies have confirmed that our products have beneficial effects in a randomized double-blind placebo-controlled crossover trial (the ‘gold standard’ in studies on humans) of our sleep bracelet conducted by Heather Hausenblas, Ph.D., Associate Dean, School of Applied Health Sciences and Professor, at Jacksonville University.

These studies reported statistically significant improvements in mood, perceived stress, anxiety, and sleep quality. Furthermore, when the participants wore the Bracelet compared to the placebo bracelet, they had improvements in their REM sleep, deep sleep, and breathing rate while sleeping, resulting in improvements in their overall quality of sleep. In the words of Dr. Hasenblas.

How was the technology developed?

Natural Frequency Technology was developed by NexQuest Life Sciences. Years of careful research, testing and collaboration with universities yielded the technology that is at the core of all of our products.

 NexQuest Life Sciences is an innovative company that is bringing exciting possibilities and opportunities to the wellness and therapeutics space, utilizing our clinically proven Natural Frequency Technology®.

Every living organism on the planet has a unique and complex signature of electromagnetic frequency patterns. We live every day in an energy field built from many frequencies, including the extremely low frequencies of the Earth’s magnetic field, radio waves, infrared, visible, and ultraviolet radiation. So too people generate their own bio-magnetic fields. When a human being is in a calm state or is asleep, their bio-magnetic field resonates at different frequencies compared to when they are wide awake and moving around. This is reflected in the electrical activity of the brain and heart.


We define wellbeing as a state of harmony achieved through physical, emotional, mental and spiritual alignment.

When worn on or near the skin, the body’s own bio-magnetic field harmonizes with the frequencies, promoting good sleep, creating a feeling of balance or feeling more energized.

Philip Stein technology works by channeling natural frequencies for your benefit. Everyone reacts differently. Some experience significant positive changes while, for most people, the benefit is incremental and contributes towards their wellness lifestyle on an ongoing basis.

There is no specific time frame for the technology. While some might feel an immediate benefit, for others it might take longer. We recommend wearing a watch or sleep bracelet for 30 nights, then reviewing its effect.


The natural frequencies that may help balance you during the day are not the same as those that help improve your quality of sleep. Therefore, the technology in our watches and sleep bracelets is tuned to pick up different frequencies, and has different effects on your body. We recommend wearing the watch during the day and the sleep bracelet at night to get the most benefit.

Each stage of sleep is associated with different frequencies. The technology in our sleep bracelet picks up and channels a variety of these frequencies, and is perfectly calibrated to help you to sleep better.

Every person is unique and experiences the effects differently. Some wearers describe significant effects, while for others, they’re more subtle. As it may take some time to adjust to the nuances of the technology, we recommend you wear the sleep bracelet for 30 consecutive nights and then evaluate the effect on your body.

Any time you want to sleep. The best time to wear your sleep bracelet is at night, so that it can help you when you need it most, yet you might find it useful for napping and when flying, as it may help with jet lag.

Put the sleep bracelet on shortly before you go to sleep. You may find that taking it off just before you get up helps you feel more refreshed in the morning.


Since Philip Stein products are lifestyle accessories, not medical devices, we suggest that you consult your doctor before wearing one of our accessories, or any other device.

While the Philip Stein sleep bracelet is designed to help contribute to an improved quality of sleep, it is not designed to cure medical conditions like sleep apnea and insomnia, for which you should consult your doctor.

Our technology is based on naturally occurring frequencies and we are not aware of any instances of interference with a pacemaker. However, we do recommend consulting your doctor before choosing to wear a Philip Stein accessory.

Accessory Details

Philip Stein timepieces feature high-quality quartz movements, as well as self-winding automatic movements. We use Japanese and Swiss movements for different models.

The acronym ATM stands for “atmosphere” and refers to how well a watch can withstand pressure.

Care and Cleaning

Detailed maintenance on your watch movements will help maintain its accuracy. Depending on the model, this should be carried out every three to five years. Routine maintenance, such as battery changes, will be required more frequently. You can use our store locator to find your nearest Philip Stein Authorized Repair Center, for more information.

The battery does not need to be replaced for the technology to function, however old batteries should be removed and replaced in order to avoid damaging other components. Battery life depends on the model, but is estimated to be around 18–24 months. Batteries are not covered under the warranty, however, if the timepiece is still within its two-year warranty period, replacement of batteries is required to be carried out by a Philip Stein Authorized Repair Center.

We recommend checking your watch for build-up in its creases and stainless steel bracelet, and gently cleaning it using a soft, damp cloth and soft toothbrush with mild soap (without fragrances or moisturizers). Keep the crown in its home position to prevent moisture entering the case. Dry the watch and bracelet completely with a soft dry cloth when finished.

We recommend surface cleaning your strap and bracelets using warm water and mild soap with a soft brush. With the exception of rubber bracelets, avoid completely submerging any strap in water. Lay flat and air dry, avoiding artificial heat and direct sunlight. We recommend cleaning once a week for heavily worn straps, or if the strap has come into contact with excess perspiration.

Your watch should not have direct contact with water and should be kept away from cleaning agents, perfumes, cosmetics and other solvents, which can cause damage to the bracelet, straps, gaskets or seals. If your watch comes into contact with salt water or chlorinated water, we recommend rinsing with fresh water to help preserve the gaskets and seals.

The natural materials used to manufacture your strap are sensitive to intense sunlight, chemicals, and excessive perspiration. Therefore, continued exposure to these conditions could cause discoloration or other forms of damage. Friction with external garments could also cause straps to lose color over time. We do not recommend wearing light-colored straps continually, as they will pick up residue and become stained more easily than those that are darker.

Most Philip Stein watches feature Curved Sapphire Coated Mineral Crystals. While no watch crystals are scratch or shatter proof, sapphire coated crystals offer added protection. Full sapphire crystals offer the highest level of resistance available, however, are still not impervious to damage. Crystal replacements can be performed by any of our Authorized Repair Centers.

Condensation happens when the watch encounters sudden temperature changes. This could happen when going from hot outdoor climates to cool, air-conditioned rooms. If the condensation does not clear, or happens repeatedly, please contact your nearest Philip Stein Authorized Repair Center.

All water resistant watches have gaskets and seals keeping water and air from entering the watch case. Exposure to various conditions, including oils and salts from our bodies, may cause these gaskets and seals to deteriorate. We recommend that these items be checked by a Philip Stein Authorized Repair Center each year as a precautionary measure.


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We don’t charge any fees. That means no late fees, no prepayment fees, no annual fees, and no fees to open or close your account. Depending on the size of your purchase and where you’re shopping, your payment plan may include interest. You’ll never owe more interest than you agree to on day one—so you always know exactly what you’re getting into.

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