Sennheiser HDR 120-W – Wireless On Ear TV Headset Headphones

Sennheiser HDR 120-W – Wireless TV Headphones

The Sennheiser HDR 120-W wireless on-ear headphones are available as a single stand alone headphone that are specifically made to work in conjunction with the Sennheiser TR 120-W transmitter. When you need more than one pair of headphones, purchase one RS 120-W system, which includes a single TR 120-W transmitter and a single HDR 120-W headphone, and then however many additional HDR 120-W wireless on-ear headphones that you need based upon how many people you want to be able to listen.

• Wireless, on-ear, open supra-aural headphone
• Dynamic 30 mm driver
• Frequency response: 22–19,500 Hz
• Bluetooth LE Audio with LC3 codec, up to 60 m range
• Battery: 2 × AAA NiMH rechargeable, up to 20 hours operating time
• Transmitter connects via RCA or 3.5 mm analog; broadcasts to unlimited headphones simultaneously
• Weight: HDR 120-W 215 g (incl. batteries)
• 2 Year Warranty

Highlights & Key Features

Broadcast Audio
Using the Broadcast Audio feature — part of the LE Audio standard — you can connect any number of HDR 120-W headphones to a single TR 120-W transmitter for synchronized listening. There is no limitation on the number of headphones that can be simultaneously connected. This makes the system ideal for couples, families, or group viewing environments where multiple listeners want to enjoy the same TV or music source, each with their own independent volume control. Additional HDR 120-W headphones are available separately. To pair, place the new headphones within 30 cm of the transmitter and switch them on. The headphones will search for the transmitter and connect automatically. Once paired, the headphones will reconnect to the transmitter each time they are switched on within range.

Volume & Audio Performance
The HDR 120-W headphones feature an ergonomic volume control dial on the right ear cup, allowing you to adjust volume independently of your TV's volume setting. Maximum volume output is 100 dB SPL (1 kHz / 1 mW), providing extra amplification for anyone who needs it. Total harmonic distortion is less than 0.7% at 1 kHz and 100 dB SPL. Volume is slightly reduced at the beginning of audio transmission and levels out within the first 1–2 minutes to prevent a sudden loud signal at switch-on.

Battery & Charging
The HDR 120-W headphones are powered by two included 1.2 V AAA NiMH rechargeable batteries providing up to 20 hours of operating time. To charge, simply place the headphones on the TR 120-W transmitter's headphone holder — the headphones switch off automatically and the CHARGE LED lights red. When fully charged, the LED turns off. Charging time is approximately 5 hours (to greater than 95% capacity). For first use, Sennheiser recommends charging for at least 24 hours without interruption to optimize battery performance. When the batteries are almost empty, you hear an alert tone every 60 seconds; the headphones switch off when the batteries are fully depleted. Replacement AAA NiMH rechargeable batteries can be used.

Comfort & Design
The HDR 120-W headphones use an on-ear (supra-aural) open design with plush fabric ear cushions and a low-pressure adjustable headband for lightweight comfort during long listening sessions. The ear pads are replaceable by twisting counterclockwise to remove and clockwise to lock new pads in place, with L and R markings for correct orientation. The headphones weigh 215 g including batteries.

Details & Specifications

MODEL INFORMATION
Model: HDR 120-W (headphones)
Compatible With: RS 120-W (system, sold separately); TR 120-W (transmitter, sold separately)
Article number (SKU): 700241

HEADPHONE – AUDIO PERFORMANCE
Transducer principle: Dynamic
Transducer size: 30 mm
Frequency response: 22–19,500 Hz
Nominal impedance: 24 Ω
Sensitivity: 100 dB SPL (1 kHz / 1 mW)
Total harmonic distortion: < 0.7% at 1 kHz, 100 dB SPL
Ear coupling: Supra-aural (on-ear)
Wearing style: On-ear, headband, open supra-aural
Ear pad material: Fabric
Sound modes: Speech, Music, Neutral

WIRELESS
Connection: Bluetooth LE Audio
Frequency band: 2,400 MHz to 2,483.5 MHz
RF output power: 10 mW (max)
Range: Up to 60 m (free line of sight)
Maximum simultaneous headphones: Unlimited

BATTERY
Battery specification: 2 × 1.2 V (AAA), NiMH rechargeable
Operating time: Up to 20 hours
Charging time: 5 hrs (>95%)
First-use charge: 24 hours recommended

PHYSICAL SPECIFICATIONS
Dimensions: HDR 120-W: 195 × 190 × 82 mm
Weight: HDR 120-W (incl. batteries): 215 g
Color: Black

ENVIRONMENTAL
Storage temperature: –20°C to +40°C
Storage relative humidity: < 90% (non-condensing)

WHAT'S IN THE BOX
HDR 120-W headphones
Two rechargeable batteries: 1.2 V (AAA), NiMH
Adapter for audio connection 3.5 mm
Quick guide & safety guide