All Ereada® Amethyst mats comparison: BROWN, PURPLE and GRAY

Three collections of Ereada® mats 2021

Ereada® MATS are the original products manufactured in Korea.

These mats of the same size are 20-30% heavier than other warming mats with crystals in the market. Ereada Amethyst pads may be less hot to touch, but more crystals inside will generate more infrared rays.

Our latest mat collections have the following functions:

1. BROWN Ereada Amethyst mats: CRYSTAL RAYS, FIR (FAR INFRARED), NEGATIVE IONS, N.P. (NEGATIVE POTENTIAL) 
2. PURPLE Ereada Amethyst mats:  CRYSTAL RAYS, FIR, STATIC MAGNETS, PEMF, PHOTON, NEGATIVE IONS, AIR IONS
3. GRAY Ereada Amethyst mats:  CRYSTAL RAYS, FIR (FAR INFRARED), PEMF, NEGATIVE IONS, AIR IONS (newest collection)

BROWN Ereada® Amethyst mats are classic, similar to Richway biomats. Both brands come from South Korea, where they were initially invented. Local facilities make these products for more than twenty years, and many old mats are still fully functional.

Our BROWN mats with the Negative Potential function (N.P.) produce Negative Ions by the anion layers inside the mattress and a particular silver fiber layer generating High Negative Potential Electrostatic Field by DC 600v. N.P. is considered to be the most efficient for transferring more Negative Ions. 

This function is similar to Richway E.D.N.I. (Electrical Discharge of Negative Ions), very relaxing and soothing. Ereada® Brown mats can generate N.P. for 1 hour (mini mats for half-hour) simultaneously with heating, while Richway Biomats can do it only when the mat heating is OFF. 

Only the Richway Biomat of Professional size and larger have E.D.N.I. while all Brown Ereada Amethyst mats, including the Mini mat, feature N.P.

PURPLE Ereada® Amethyst mats and Gray Ereada® Amethyst mats have the same powerful (100-400 gauss intensity) PEMF magnetic pulsation. 

PURPLE mats have an additional static magnetism function with 12 pieces of 300 Gauss intensity Permanent Magnets in the hip and leg zone.

PURPLE and GRAY mats Compact Pro (Midsize 24"x59") and bigger have PEMF coils (3-5 modules) in the upper part of the body zone. You can switch between static magnets and PEMF for your upper or lower body lying with your head towards the logo area or in the opposite direction. These mats deliver Negative Ions into the air by the controller function (AIR IONS) and the same anion fabric layers as all Ereada® mats.

GRAY mini mats have two PEMF coils. 

PURPLE mini mats have only static magnetism function but will get two PEMF coils by the end of 2019.

All PURPLE Ereada® mats have additional Photon function emitting visible Monochromic 660nm Red Light. It is not available on other mats.

Both PURPLE and GRAY mats do not have the N.P.   of the BROWN Ereada® mats or Richway Biomats. 

It is a unique natural feature of Amethyst crystals to emit FIR radiant heating rays and Negative Ions when they are hot. FIR emission of amethyst mats is 366 W/m2  with min 93% efficiency in the wavelength range 5-14 microns; with almost 80% of this energy transferred at two, so-called "Amethyst Peaks," at 7 and 12 microns.

That is why we use Amethyst as the main healing stone in our beds.

Ereada® mats (bigger than mini size and some of the PURPLE mini mats) have seven heat levels on the controller between 86°F and 158°F. Both the current temperature and the set to heat are not displayed; only the level is shown. It makes controllers more reliable in heavy-duty use. 

The BROWN and GRAY Mini mats controllers show the Celsius temperature set to heat (for several seconds). They then switch to displaying the current temperature, which may be more convenient and informational in use.

The surface of the PURPLE mats is the mesh fabric, so the stones may have more significant pressure on your back than when you use the BROWN or GRAY mats covered with soft suede fabric. But you have more contact with the Amethyst crystals of the PURPLE mattress.

PURPLE Mat Photon function Red Light LEDs may also create some more pressure. Therefore, this collection is not the same for sleeping or lengthy procedures as the other two collections, mainly if the mat is used without a Multi-layer protector or without the thin cover (one or both covers are added into all sets) high heat levels. 

Of course, a lot depends on your physique, and usually, skinny folks are more sensitive to stone pressure.

Ereada® GRAY and PURPLE mats PEMF is more potent than other brands of gemstone mats.

Our old mats had only one 50-60 Hz frequency setting. Newer mat controllers offer a choice of PEMF frequencies. They function in the Ultra Very Low-Frequency range of magnetic pulsations between 8 and 64 Hz. 

There are nine pulsed magnetism settings in the new PURPLE and GRAY Ereada amethyst mats and controllers since 2019. You can select any of these nine settings by pressing the PEMF button repeatedly. The controller's screen will show for a moment the set PEMF level (1-9), then will switch to the temperature level set before (1-7).

Level 1 is 8 pulsations per second (8Hz), which is the first harmonic Schumann resonance. 

Level 2 is 16 pulsations per second (16 Hz)

Level 3 is 24 pulsations per second (24 Hz)

Level 4 is 32 pulsations per second (32 Hz)

Level 5 is 40 pulsations per second (40 Hz)

Level 6 is 48 pulsations per second (48 Hz)

Level 7 is 56 pulsations per second (56 Hz)

Level 8 is 64 pulsations per second (64 Hz)

Level 9 is the random program auto-changing frequencies between 8 and 64 Hz every 1-2 seconds.

The PEMF program cycles 20 minutes ON and 100 minutes OFF. 

It repeats four cycles if you set the timer for 8 hours or more extended sessions.

The gauss output for the PEMF is 100 to 400 Gauss depending on the frequency (higher frequency -> higher gauss). Static magnets have 300 gauss output if measured directly on the magnet or coil. 

There were three PEMF Coils in the upper body part of the mat on the older model lines of Ereada® PURPLE and mixed GEMSTONE mats bigger than mini size.

In the second half of 2019, the new model lines of GRAY and PURPLE mats will have the following number of PEMF coils:

Mini mat 20"x32" - Two Coils

Midsize mat 24"x59" - Three Coils

Professional mat 29"x73" - Four Coils

Single size mat 35"x75" - Five Coils

Magnetic Field disappears with distance as per the reverse square law. The intensity goes down in direct proportion to the square of the distance from the coils.

So more powerful PEMF produces a better overall effect. The higher number of magnetism coils do a better job generating a more uniform field above the mat surface.