Successor to the popular IE 40 PRO, the Sennheiser IE 100 PRO Wireless In-Ear Monitoring Headphones combines the red IE 100 PRO earphones with the IE PRO BT Bluetooth Connector. They wirelessly connect to your iOS/Android mobile device or macOS/Windows computer via low-latency Bluetooth 5.0 technology for perfect synchronization with video. Offering an accurate listening experience and high wearing comfort, the earphones are equally well-suited as everyday companions for audiophiles on the go or as professional monitors for musicians, DJs, and sound engineers performing live or producing in the studio. Support for SBC, aptX, aptX LL, and AAC codecs provides sonic quality that meets the demands of discerning listeners.

The IE PRO BT Bluetooth Connector features an in-line remote to control calls and music playback and a built-in microphone for calls and streaming. An internal lithium-polymer battery provides up to ten hours of continuous playtime for enjoyable, all-day listening. Use the included USB Type-C to Type-A cable to recharge the battery in up to 2.5 hours.

The IE 100 PRO's 10mm single dynamic drivers deliver a wide 20 Hz to 18 kHz frequency response and a well-rounded, warm sound that's powerful and nuanced, even on loud stages. Whether used at low or high sound-pressure levels (up to 115 dB SPL), your audio remains distortion-free and clearly defined—reducing ear fatigue during extended listening sessions.

Suitable for the rigors of stage use, the rugged IE 100 PRO Wireless also come with a 4.3' detachable cable for wired operation. Equipped with a 3.5mm jack, the cable enables you to use your earphones with wireless IEM bodypack receivers, mixers, and headphone amplifiers.

The compact housings are light (at 5.6 oz) and feature an ergonomic earmold design with a flat profile that provides a secure fit and comfort during prolonged use. The included pair of medium-size foam ear adapters adds up to 26 dB of passive noise attenuation, keeping extraneous sounds out and allowing you to focus on your music.

The IE 100 PRO Wireless is also supplied with three pairs of silicone ear adapters, a cleaning tool, and a soft protective pouch.

Precise In-Ear Sound    10mm Dynamic Single Drivers    Includes 3.5mm and Bluetooth Cables    Up to 26 dB of Passive Noise Attenuation

The IE 100 PRO is engineered with a 10mm dynamic single-driver design. The frequency range does not have to be split up into frequency bands as with multi-driver earphones. Distortion, phase problems, and dissonances in the inner ear are greatly reduced (or eliminated), resulting in a harmonious and powerful sound.

For safe monitoring in loud environments, the IE 100 PRO provides up to 26 dB of passive noise attenuation, reducing ear fatigue and allowing you to clearly hear your music without distracting ambient noise. This is achieved by using the pair of medium memory foam ear adapters, which expands to perfectly fit your ear canal—ensuring perfect acoustic sealing with the added benefit of enhanced bass reproduction.

The IE 100 PRO's compact design permits a lightweight construction, which, thanks to the accompanying silicone and memory foam adapters, can be individually adjusted to fit you perfectly.

• Built-in microphone and remote for call and music control
• Lightweight and durable neck-band design with reinforced ear hooks
• aptX Low Latency ensures perfect synchronization with video
• Up to 10 hours of battery life for all-day listening

The IE 100 PRO also comes with a black 4.3' detachable, straight, 3.5mm Y-cable that features reinforced ear hooks. A proprietary cable ducting with the connection inside the ear mold reduces risk of cable breaks. For a more discreet look, you can substitute the Y-cable with the IE PRO Mono Cable, a one-sided mono cable (available separately).

Related Questions and Answers

Q: 1. Do they offer additional headphones for the RS-120W?

A: The Sennheiser RS 120-W Wireless On-Ear TV Headphones, BH # SERS120W, will use the HDR 120-W headphones. The HDR 120-W headphones may be available directly from Sennheiser.

Q: 2. Are ear cups of Sennheiser Momentum 4 made from genuine leather? What is the material of ear cups?

A: The manufacturer does not specify what type of material the ear cups are made of.

Q: 3. Can the batteries by replaced or do you have to buy a new module? And if they can be replaced what type do you need?

A: The Sennheiser IE PRO BT Bluetooth Connector for IE 100/400/500 PRO In-Ear Monitoring Headphones (BH # SEIEPBTC) does not feature a user-replaceable, rechargeable battery.

Q: 4. Are Sennheiser 120 HDR headphones compatible with RS 120-W system?

A: No because the original RS-120 system uses 926 - 928 MHz and the RS-120W uses 2.4 GHz range these are not compatible.

Q: 5. Can you connect to a physical headphone jack for low latency monitoring?

A: Yes, you can connect the Sennheiser MOMENTUM 4 to a jack via cable.

Q: 6. Does it work with the Sennheiser IE 100 Pro In-Ear Headphones?

A: Yes. The Sennheiser Black Cable for IE 400/500 PRO In-Ear Headphones is compatible with the IE 100 Pro In-Ear Headphones.

Q: 7. i have a 6s phone. do these ear plugs require the use of a cable?

A: No

Q: 8. the old 120s were Radio Frequency. Are these Bluetooth? Can you use old 120 EF with the new unit?

A: The Sennheiser RS 120-W Wireless On-Ear TV Headphones BH #SERS120W would still be radio frequency. It would not be bluetooth.

Q: 9. Can the signal travel through walls, like the old RF Sennheiser 120?

A: Yes, the signal will travel through walls but not very far. The ideal usage is line of sight.

Q: 10. Do these come with optional 1/8" plug for wired connection?

A: The Sennheiser IE 100 PRO Wireless In-Ear Headphones (Red) BH #SEIE100WLR are bluetooth also comes with a 4.3' detachable cable for wired operation. Equipped with a 3.5mm jack, the cable enables you to use your earphones with wireless IEM bodypack receivers, mixers, and headphone amplifiers.