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Phi Series Phi 1 Portable
Wireless signals are part of modern life. Phi 1 is a small, simple way to take Blushield with you, wherever the day goes.
The easiest way to start with Blushield: just 1.23 oz, charged by USB-C, and small enough to forget it's in your pocket.
- Battery
- 350 mAh, rechargeable
- Charging
- USB-C, about 1.5 hours with any USB-C charger
- Coverage (Blushield spec)
- 3 m (9.8 ft) radius
- Size
- 3.5 × 1.375 × 0.375 in
- Weight
- 1.23 oz
- Case
- ABS plastic, reinforced lanyard hole
- Voltage
- 3.7 V
- Certifications
- FCC, CE, C-Tick, RoHS
- Recommended use
- On you, all day: commute, office, errands, travel
Blushield aims to ship the same or next business day from Liberty, Missouri (allow 24–72 hours; peak weeks can take longer). A signature is required on device deliveries. Shipping policy.
Unopened devices can be returned within 30 days. Opened devices have a 20% restocking fee, and return shipping is paid by the buyer. Every device has a 1-year warranty against factory defects. Full policy.
The invisible signals
around you, explained.
EMF (electromagnetic field) is the energy that electricity and wireless signals give off. Fifty years ago most homes had a landline and a TV antenna. Today it's a phone in every pocket, Wi-Fi at home and work, Bluetooth in the car and towers on every route in between. Here's what that means, in plain words.
licensed antenna records in the FCC's US database
licensed antennas within 3 miles of the White House
phones, routers and smart meters keep transmitting
How much is around you? See the licensed antennas near your address.
Source: FCC licence and antenna-structure databases, via Blushield's Find Your Device tool.
Natural and man-made
The earth and sun give off natural EMFs that vary endlessly. Man-made EMFs from devices repeat the same oscillating frequencies and carry digital data.
Part of everyday life
At home you choose your own devices. Out and about you share everyone else's: office Wi-Fi, store networks, cars and airports. That's where a portable comes in.
Blushield's approach
Blushield devices don't block or shield EMF. They emit a continually changing scalar signal patterned on the Phi ratio, a pattern found throughout nature.
Free guide
New to EMF? Start with the basics.
A short, plain-English guide to the electromagnetic fields around you every day, and simple habits for living with them. Free, straight to your inbox.
- Where EMF comes from at home, at work and when you travel
- Four easy habits you can start tonight
- How Blushield's approach differs from shielding and blocking
We'll email you the guide and occasional Blushield news and offers. Unsubscribe anytime. Privacy policy
Your day moves around.
Phi 1 moves with you.
Coffee runs, commutes, desk days and weekends away. Phi 1 is made to come along for all of it, quietly, in a pocket or bag. It's the easiest way to start with Blushield.
Is EMF good
or bad?
Brandon Amalani runs Blushield USA with his wife, Natalie, and has been Blushield's US distributor since 2016. In this short video he explains EMF and the idea behind Blushield's technology.
Built to be forgotten
in your pocket.
Small changes,
easy wins.
Four free, easy habits Blushield recommends. Start with one tonight.
- Phone away at nightCharge it across the room instead of next to your pillow.
- Move the clockTry a battery alarm clock, or set a plug-in one across the room.
- Wi-Fi off when idleSwitch the router off overnight, or go wired where you can.
- Check behind the bedKeep your headboard clear of walls with a meter, TV or appliance behind.
A thoughtful gift for the people you love
Phi 1 arrives in a black presentation box, ready to wrap. Nothing to set up and no app: they hold the button for 3 seconds and it's on.
Blushield aims to ship the same or next business day, so there's time for it to arrive before the holidays.
What Phi 1 owners say
Our family has been using Blushield technology for over six years, both at home and on the go. As my daughter prepares to move away from home and live in the Miami area, I wanted a portable device specifically designed for those demands. That’s why I chose the Phi Series.
Purchases to replace portable unit from 2022. Works great.
We really enjoy having this device for travel on a regular basis.
Absolutely love this for our daughter at school! It’s low profile and fits in her backpack like a charm!
One of the Phi 01 Portable units stopped turning on or taking a charge. After notifying Blushield, I was asked to mail it back. I was promptly notified that unit was faulty, and a replacement was on its way. I received the replacement. Thank you.
Fantastic!
This O1 portable is so light! I love it!
The attachment point for the strap on the Phi 01 should be moved to the opposite end. When using the offered pouch, the “on/off” button and power light are obscured from sight at the bottom of the pouch.
Wonderful
We were able to take the Phi Series Φ2 Plug-in with us while traveling. When we are within the sphere of the unit then I shut off my Phi Series Φ1 Portable pocket unit. Peace of mind!
Blushield’s customer service is second to none. Every interaction has been incredibly positive. This is an amazing company!
I ordered the older portable model and really liked it. Now that we have this one, we like it even better.
Individual experiences from verified buyers, not health claims. See all 55 reviews.
Good questions
Happy to help. Call 1-800-648-6317 (Mon–Fri, 9am–5pm CST) or email support@blushield.com.
No. Phi 1 works on its own: there's no app, no subscription and nothing to pair. Charge it with any USB-C cable, hold the button for 3 seconds and the green light shows it's running.
Blushield rates the Phi 1 for a 3 m (9.8 ft) radius, so keep it on you or close by.
No. Phi 1 is not a medical device and isn't intended to diagnose, treat, cure or prevent any disease.
Blushield's research page describes the studies Blushield has supported.
Blushield aims to ship the same or next business day from Liberty, Missouri. Most US orders arrive within about a week by USPS Ground Advantage. A signature is required on delivery.
Yes. Unopened devices can be returned within 30 days. Opened devices have a 20% restocking fee, and return shipping is paid by the buyer. Full return policy.
Phi 1's battery is about 1.3 Wh (350 mAh at 3.7 V), well under the 100 Wh limit for devices in carry-on bags. Check your airline's rules before you fly.
No. Phi 1 works on its own. Some people pair it with a Blushield home unit for the house and use Phi 1 when they're out. Not sure what fits? Try Find Your Device.
Take Phi 1 with you
$299.00. Ships from Liberty, Missouri. 30-day returns on unopened devices and a 1-year warranty.
Important information
Blushield products are not medical devices. They are not intended to diagnose, treat, cure or prevent any disease, and they are not a substitute for advice from your doctor. These statements have not been evaluated by the Food and Drug Administration.
Customer reviews and stories describe individual experiences. Results vary from person to person.
Phi 1 Portable is $299.00. Unopened devices can be returned within 30 days. Opened devices have a 20% restocking fee, and return shipping is paid by the buyer. Every device has a 1-year warranty against factory defects.
Return Policy · Shipping Policy · Privacy Policy · Terms & Conditions · Contact: 1-800-648-6317 · support@blushield.com