Skip Navigation


True wireless Bluetooth® earphones

7 Reviews

Item # 760M4UTW1

In Stock

 Ships FREE


Add to Cart

Buy nowCheckout now with PayPal

Ask an expert

Our North American experts can help.




Our take on the PSB M4U TW1


The PSB M4U TW1 true wireless earphones stay secure during hard workouts and sound lively and natural.

Lightweight, cord-free headphones with a strong sound pedigree

Truly wireless headphones are a popular choice these days, especially for runners and the gym crowd. The PSB M4U TW1 Bluetooth® in-ear headphones play music wirelessly from your phone and have no connecting cable to get in your way. These sweat-proof earbuds sport a unique "hook" design to keep them secure while you move. But the really special feature here is the audio performance. It's much easier to stay motivated when listening to a detailed, energetic sound profile that's sculpted by the legendary Paul Barton — one of my favorite speaker designers. 

Product Highlights:

  • 100% wire-free headphones
    • no connecting cord between left and right earbuds
  • 6mm dynamic drivers tuned for detailed sound with deep bass
  • "earhook" design keeps headphones secure while running or exercising
  • IPX5 sweat- and weather-resistant
Bluetooth and Battery Info:
  • Bluetooth 4.1 for wireless music listening and phone calls
    • touch and tap control for Bluetooth pairing, music playback, and calls
    • built-in microphone for taking calls with a smartphone
  • built-in rechargeable battery offers 4 to 5 hours of listening
  • voice prompts provide information on battery life, device connection, and caller ID
Accessories and General Info:
  • "Y-shaped" USB cable included for charging
  • includes 4 pairs of silicone ear tips for a customized, comfortable fit
  • carrying case
  • frequency response: 20-20,000 Hz
  • weight: 0.14 oz.
  • warranty: 2 years
  • Our 60-day money-back guarantee

What's in the Box:

  • Left wireless ear bud (black)
  • Right wireless ear bud (black)
  • 4 Pairs of silicone ear tips (1 pair installed)
  • 8" USB charging cable (Type A USB on one end and two Micro-B USBs on other end)
  • Carabiner clip
  • Zippered storage case
  • Quick Start Guide
  • Limited Warranty booklet

PSB M4U TW1 Reviews

Average Customer Review(s):

(7 Reviews)


Crutchfield customer from Port Ludlow, WA on 2/24/2019

Crutchfield Customer Review (What's this?)

Volume to low and no volume control on the device. Very poor amplification. Device was returned the next day.

Pros: None



Larry from Wyoming, MI on 7/8/2018

Crutchfield Customer Review (What's this?)

Had two different pairs and I couldn't get either pair to sink to each other


Cons: Could not pair with each other

Crutchfield response on 7/9/2018 Larry contacted our Customer Support team and set up a return. Purchases from Crutchfield can be returned or exchanged within 60 days.


Peter from New York, NY on 6/7/2018

Crutchfield Customer Review (What's this?)

This is the second pair of wireless earbuds I have purchased in the last two years. My Beats3 broke twice, the second time right after the warranty expired. I tried the PSBs primarily for the over-the-ear fit they had. Unfortunately, it was impossible to pair them with my iPhoneX. Tried repeatedly and could not get one of the buds to pair with other. Every time I tried pairing it would inadvertently activate Siri. Controls are poorly designed and difficult to use. There were five reviews on Crutchfield, all positive, so maybe I got a bad pair but, overall, very disappointed with the purchase.

Pros: None

Cons: Impossible to pair with one another. Poor control design

Top notch

Crutchfield customer from Pitman, NJ on 5/18/2018

Crutchfield Customer Review (What's this?)

These are great. Very good sound which you would expect from PSB. They can be a bit difficult to pair between right and left in the beginning but once you get that done they are easy. Make sure you try the largest ear buds possible. There is dramatic sound improvement when you get a good seal in your ear canal. Very personal spacious sound experience.

Pros: It's all about the sound.

Cons: Pairing right to left in beginning is a bit clumsy.

Great EarPods

Dennis from Manalapan, NJ on 2/28/2018

Crutchfield Customer Review (What's this?)

I was looking for a pair of wireless EarPods that were similar to the Apple AirPods except these have over ear hooks which ensure that they stay on when jogging. At first I was concerned that I could not hear much bass so I changed the earpiece to the large size which resulted in a tighter sealed fit. The bass is now pronounced and the sound is excellent. I highly recommend these.

Pros: over ear hooks ensure they stay in your ear

Cons: small controls


Russell from Lexington, NC on 2/20/2018

Crutchfield Customer Review (What's this?)

I bought these for my girl and she loves them! I was skeptical at first. So I hijacked them for a couple of days and wow. They sound great and no dropping of either headphone! They pair easy and once you get them in your ears right they stay put!

Pros: Sound great and very comfortable

Cons: No volume control on headphones


Crutchfield customer from Kingston, NY on 2/6/2018

Crutchfield Customer Review (What's this?)

Great sound. Works flawlessly. This is my first pair of wireless headphones and I guess my only complaint is that the power button is a little small and hard to depress for the time required to power on/off.

Pros: sound

Cons: power button is small


Hands-on research

Features and Specs

Fit Style In-ear/Earbud
Earcup Type Closed
Earcup Width x Height 0.697" x 0.866"
Noise-canceling No
Mic For Taking Calls Yes
iPhone Control Yes
Lightning Connector No
Android Control Yes
Frequency Response 20-20k Hz
Sensitivity N/A dB
Impedance N/A
Weight 0.28 ounces
Cord Length N/A
1/4-inch Adapter Included No
Storage Case
Charging Case No
Volume Control Yes
Parts Warranty 2 Years
Labor Warranty 2 Years

Product Research


Overview: The PSB M4U TW1 True Wireless Earphones allow you to listen to your favorite music or talk on your mobile phone without the hassle of messy wires. The M4U TW1 includes two separate ear buds, one left and one right, that wirelessly connect to your device via Bluetooth, and each have their own rechargeable battery. These feather-weight ear buds weigh only 0.3 ounces each. The earphones come with 4 pairs of silicone ear tips, USB charging cable, and a padded, zippered storage case with a carabiner-style clip.

Bluetooth: The earphones are equipped with Bluetooth version 4.1 with A2DP and AVRCP profiles. The wireless operating distance is approximately 10 meters (33 feet).

Design: The M4U TW1 earphones have a unique earhook design that hangs behind your outer ear and stays in place. Made of ABS with a soft rubber coating, the earphones provide hours of comfort and a secure fit. They are also sweat- and weather-resistant (IPX5 rated), so you can wear them while you work out, or in inclement weather. The high-performance 6mm drivers provide the signature Paul Barton PSB sound with lots of detail and ample bass response. Four sizes of silicone ear tips (XS, S, M, L) are included so you can find the perfect fit for your ears.

On-board Controls: The PSB M4U TW1 True Wireless Earphones are equipped with on-board touch controls and a power button on both ear buds. You can use the controls on either the left or right side. Once you have powered on one ear bud and paired it to your phone, you can power on the corresponding ear bud and they will automatically sync with one another. The silver circular area of each ear bud provides the touch controls for the earphones. Short taps and long presses control the playback device as follows:

  • Single tap: Answer call, End call
  • Double tap: Play, Pause
  • 2-second press: Skip backward (left ear bud), Skip forward (right ear bud)
  • 5-second press: Activate Voice Assistant (Siri, Google Assistant)

Power: Each ear bud contains a Polymer Lithium-Ion rechargeable battery (3.0V, 190mAh) to power the earphones. Micro-B USB ports are located on the ends of the ear buds for connecting the USB charging "Y" cable (One Type A connector on one end and two Micro-B USB plugs on the other end). Using a 5V 500mA USB charging port, the earphones charge in about 2 hours. On a full charge, the batteries provide up to 5 hours of talk time and 80 hours of standby time. For music playback, the batteries give you up to 4.5 hours with two ear buds, or up to 5 hours with one ear bud.


  • Frequency Response: 20Hz - 20kHz
  • Total Harmonic Distortion: 0.25% (1kHz, 1mW)
  • Transducers: 6mm dynamic drivers, closed back
  • Dimensions: Ear Buds: Width 0.697", Height 0.866", Depth 0.929"
  • Weight: 0.3 ounces each

Our Product Research Team

At Crutchfield, you'll get detailed, accurate information that's hard to find elsewhere. That's because we have our own in-house Product Research team. They verify what’s in the box, check the owner's manual, and record dimensions, features and specs. We stay on top of new products and technologies to help people make informed choices.