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Sennheiser Flex 5000 TV Listening System + HD4.20s Headphone Bundle

SKU 6710 B2
Sold out
Original price $299.95
Original price $299.95 - Original price $299.95
Original price $299.95
Current price $249.99
$249.99 - $249.99
Current price $249.99

The Sennheiser Flex 5000 TV System provides three different hearing profiles to enhance TV, movies or music PLUS a Speech Intelligibility feature that reduces TV background noise for added clarity. 

This bundle includes the comfortable HD4.20s Headphones, also by Sennheiser. These will greatly improve your listening experience and can be comfortably worn for extended periods of time.

Featuring an extremely durable design and a folding headband for easy storage when not in use, the HD 4.20s is perfect for listening to music and taking calls on the go. The convenient one-button remote on the cable allows you to answer calls easily, and the comfortable fit guarantees long hours of listening pleasure. If you’re looking for high-quality sound and no-nonsense functionality, Sennheiser’s HD 4.20s is the right choice for you.

  • Includes ultralight MX 475 earphones but is compatible with any wired headphones or earbuds 
  • Three hearing profiles enhance your experience while watching TV, movies or listening to music 
  • Speech intelligibility provides unsurpassed speech clarity and reduces TV background noise 
  • Left/right balance control 
  • 30-meter range provides flexibility to move around 
  • 12 hours of continuous playing time per battery charge 
  • Full compatibility with digital and analog TV outputs 
  • The transmitter serves as a smart docking station for the receiver that charges the durable integrated batteries
  • This system may be expanded to include an additional FLEX Receiver - SKU 6710 R
  • Clip-on receiver with built-in rechargeable battery 
  • Docking station/transmitter
  • MX 475 earphones 
  • HD4.20s Headphones
  • Power supply unit with country adapters for EU, UK, US and AUS
  • TV connection cable for 3.5mm headphone audio out 
  • TV optical cable for digital audio out 
  • Instruction manual 

Note: RCA adapter for analog connection (red & white adapter) NOT included - must be purchased separately if needed. 

  • Connectivity: TV Optical cable for digital audio out: straight /Pink 3,5mm audio: 1x straight and 1x angled / Blue
  • Audio connection: analog input: 3.5 mm jack socket input voltage range: 0.15 to 4.0 Vpk
  • Range: 30 m
  • Operating time: 12 hrs
  • Carrier frequency: 2.4 to 2.4835 GHz
  • Frequency response: 15 hz - 15,000 Hz
  • Charging time: 3 hrs
  • Power supply / Battery type: built-in Lithium-Polymer rechargeable battery BAP 800, 3.7 V, 350 mAh, Receiver: built-in Lithium-Polymer rechargeable battery BAP 800, 3.7 V, 350 mAh, Transmitter: 5 V , 600 mA
  • Weight: Transmitter: 232g, approx. 33g, Receiver: approx. 33g
  • Maximum number of connected receivers: 4


  • Color: Black
  • Impedance: 18 Ω
  • Frequency Response: 18-20,000 Hz
  • Sound Pressure Level (SPL): 118dB (1kHz/1Vrms)
  • THD, total harmonic Distortion: <0.5% (1kHz/100dB)

Ships FREE today

All in-stock orders placed before 5pm EST (Mon-Fri) will ship the same day. Ground shipping is FREE within the 48 contiguous United States for all orders over $9.95. Expedited shipping options, as well as ground shipping to Alaska, Hawaii, or Puerto Rico are available for an extra charge.

Returns & Exchanges

Qualifying products may be returned within 30 days from receipt for a full refund. Please note that hearing aid accessories, hygine items and ear care products cannot be returned. Please CLICK HERE to review our full returns policy.