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Your daily portion of freedom

(144) 79,99 49,99 Incl. VAT
37% savings
Color: Night Black
  • Order now! Ready for shipping within one day
  • Lowest price in the last 30 days: 49,99
  • 3,99 Shipping

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  • Risk-free 8-week trial
  • Free return shipping
  • In-house customer service
  • More than 40 years of expertise


Why we love this product

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

Key advantages at a glance

  • Top-of-the-range in-ear headphones with flexible wearing options for optimal fit in any activity
  • Linear HD coaxial drivers: one tweeter and one mid-woofer 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 transmitted lip-synchronously
  • Waterproof according to IPX7, headphones hold together magnetically and preventing them from getting lost
  • 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, slightly transparent cable protection, headphones available in black and white
(4.58 of 5 out of 144)
All reviews

Your daily portion of freedom

The all-in-one package, the all-rounder, the always-on headphones - call it what you will. The REAL BLUE IN is all of that. And thanks to the different fit adapters, it can do it all.

Listened to by the big ones

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

Always fitting

Different fit adapters ensure optimal hold for each application.

Pinna piece: For light workouts, never presses. Only falls off when the gravity decreases.

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

With hook: for heavy workouts. Always holds. Even on J-class planets or on 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 wireless audio transmission, as long as both transmitter and receiver support the codec. AAC is supported by Android but mainly by 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?

Further functions

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

Rain, dirt or dust don't bother the REAL BLUE IN at all thanks to IPX7 certification.

    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 an individual sound image via the infinitely adjustable and permanently storable equaliser. You can also connect two REAL BLUE INs to a notebook 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.

    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



      Top-of-the-range 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 medium volume 10 h
        Akku-Kapazität 120 mAh
        Battery type Lithium-ion
      • Description Item
        Frequency range from/to 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 04.06.2023 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.