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Your daily dose of freedom

Color: Night Black


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Why we love this product

The REAL BLUE IN simply do it all. Whether chilling in the city, jogging in heavy rain or simply watching Netflix on your laptop: With their long battery life, IPX7 certification and legendary Teufel bass, you have the freedom to listen anytime anywhere.

Key advantages at a glance

  • High-end in-ear headphones with flexible wearing options for optimal fit in any activity
  • Linear HD coaxial drivers: one tweeter and one midwoofer per earphone for detailed, silky highs and deep, dry bass
  • Bluetooth with apt-X® and AAC for music streaming in CD-like quality from Spotify, Amazon Music, YouTube, Apple Music and co., video sound is perfectly synced
  • IPX7 rated waterproofing, headphones hold together magnetically so you'll never lose them
  • Run times of up to 10 hours, auto-play function as soon as the headphones are paired, in-line remote control for music control and calls
  • Handsfree with Qualcomm® cVc™ technology for wireless calling, Skype, Facetime, voice control via Google/Siri in high sound quality
  • ShareMe function: connect two REAL BLUE IN wirelessly with a smartphone, Teufel Headphones app offers various setting options
  • Fit adapters (Pinna piece, Hook and 4 Ear-Tips) for heavy workouts, soft workouts and chilling out, stylish, semitransparent cable protector, headphones available in black and white

Your daily dose of freedom

The all-in-one package, the all-rounder, the always-on headphones - call them what you will. The REAL BLUE IN are all those things. And thanks to the different fit adapters, they really can do it all.

Runs with the big dogs

The REAL BLUE IN use the same sound generation principle as our DEFINION floorstanding speakers. The Linear HD coaxial drivers contain one tweeter and one mid-woofer per earphone. Each driver delivers more individually: more clarity, more bass, warmer mids. This feature is unique in its price range.

Always have the perfect fit

Different fit adapters ensure optimal hold for every application.

Pinna: For light workouts, never pressing. Won't fall out unless gravity gets funky.

Without: classic fit for long-wearing sessions. Four ear-tip sizes included.

With hook: for heavy workouts. Always firm. Even on J-class planets or Knowhere.

Bluetooth: high fidelity wireless audio

Our products provide clean, stable Bluetooth connection with minimal power consumption at ranges from 10 meters and up.

Funktioniert für Systeme mit Android.
Funktioniert an Windows Geräten

Stream music, movies, or games from your smartphone, tablet, laptop, PC or Mac.

All operating systems supported.

Perfectly synced

The sound and video always match whether you're gaming or watching TV.

AAC is a technology that ensures CD-like quality for audio streams when the sender and receiver device support it. AAC is supported by Chromecast built-in, Android devices, and iOS devices.


AAC is now a widely used Bluetooth codec, similar to Qualcomm's apt-X, which provides CD-like quality for wireless transmission as long as both transmitter and receiver support the codec. AAC is supported by Android and iOS devices.

Bluetooth aptX

Qualcomm aptX

Qualcomm aptX is a Bluetooth codec which, similar to AAC, delivers CD-quality audio wirelessly. Both sending and receiving device must support this codec in order to use it. AptX is supported by Android devices as well as Mac OS.

Talk to me

Qualcomm's built-in CVC noise and echo cancellation ensures high-quality voice and phone calls. So you're easy to understand even in noisy environments.

Icon - Phone
Hello Marta! How's your bike?
Hey Siri! How do I get to Northampton?
Hey Google! Where's the closet shop?

Additional functions

The headphones hold together magnetically, meaning you won't lose them easily.

They're IPX 7 certified, so rain, dirt and dust don't bother the REAL BLUE IN.

    ShareMe and Teufel Headphones App

    You can download the Teufel Headphones App free of charge with the REAL BLUE IN. You can use it to create a custom sound image via the infinitely adjustable equalizer, which will remember its last setting. You can also connect two REAL BLUE INs to a laptop or smartphone: ideal for watching films together.

    The full set

    The REAL BLUE IN comes with a bag, ear adapter and USB-C charging cable.

    Show me more

    Included components

    • 1 × REAL BLUE IN pack incl. tips/hook/pinna piece – Night Black
    • 1 × USB-C charging cable for REAL BLUE IN
    • 1 × Pouch for REAL BLUE IN – Black



      High-end in-ear headphones with flexible wearing options for optimal fit in any activity

      • Description Item
        Width 1,46 cm
        Weight 19,2 g
        Height 1,46 cm
        Depth 2,08 cm
      • Description Item
        Android Yes
        iOS Yes
        Microsoft Yes
      • Description Item
        Integrated DSP Yes
        Battery life at medium volume 10 h
        Battery capacity 120 mAh
        Battery type Lithium-ion
      • Description Item
        Frequency range 15 - 20000 Hz
        Enclosure type Closed
        Waterproof IPX7 Yes
      • Description Item
        Bluetooth 5.0 Yes
        Bluetooth AAC Yes
        Bluetooth aptX Yes
        Qualcomm cVc Yes
        USB C Yes
      • Description Item
        Remote control Inline
      • Description Item
        Cable length 0,8 m

    Expert reviews

    * Offer valid until 04.10.2023 23:59. The voucher is only intended for the use of private customers. The voucher cannot be redeemed for cash, nor can it be used in combination with other vouchers. It cannot be used for orders that have already been placed. The resale of a voucher is prohibited and it will lose its value in the case of being resold. You can learn more about the terms and conditions in the General Business Conditions.