Sennheiser BTD 700 – Bluetooth USB Dongle and Adapter

Sennheiser BTD 700 Bluetooth USB Dongle

The BTD 700 Bluetooth USB Dongle is a next-generation adapter designed to deliver high-definition, low-latency wireless audio. Featuring aptX Lossless and Auracast technology, it transforms how you experience music, gaming, and calls—seamlessly and effortlessly.

• USB-C dongle with included USB-A adapter
• Bluetooth 5.4
• aptX Lossless codec support
• Auracast™ technology for multi-streaming
• Gaming mode with 30ms low latency
• Up to 10m / 33ft range
• Compatible with PC (Windows 10+), Mac (macOS 11+), Android 13+, iPhone/iPad with USB-C
• Plug & play (no driver installation)
• 2 Year Warranty

Highlights & Key Technologies

High-Definition Audio
With support for aptX Lossless and aptX Adaptive, the BTD 700 delivers rich, clear sound that elevates everything you listen to. If your headphones support one of the following high-resolution audio encoding methods, you can play music in high quality: aptX Adaptive (aptX, aptX Lossless). Otherwise your music will be played in normal audio quality (SBC). The status LEDs on the dongle housing indicate the audio encoding method used.

Auracast Multi-Streaming
Stream audio to multiple headphones or speakers at once using Auracast technology. Perfect for sharing playlists or gaming with friends. Auracast technology allows audio data to be output to multiple output devices simultaneously, such as your own headphones and a friend's headphones.

Lag-Free Gaming & Streaming
With latency as low as 30ms in gaming mode, the BTD 700 keeps your audio and video in perfect sync—ideal for smooth gaming and seamless streaming. When you watch videos and your headphones support aptX Low Latency, the audio-image synchronization is automatically optimized. This means that audio and video always stay in sync.

Plug & Play Setup
No drivers, no fuss. Just plug the BTD 700 into your device, pair it once with your headphones, and you're ready to go. No driver installation is required to connect to a device. The dongle is automatically recognized as an external sound card. It's the fast, easy way to enjoy wireless audio.

Clear Calls, Extended Range
With enhanced voice pickup and extended Bluetooth range up to 10 meters with a free line of sight, you'll enjoy crystal-clear calls without dropouts or interference—ideal for work meetings or catching up with loved ones. The transmission range largely depends on environmental conditions such as wall thickness and wall composition.

Sennheiser Dongle Control App
For a personalized audio experience, download the Sennheiser Dongle Control app to customize audio modes, select codecs, and update firmware with ease. Using the program, you can update the product's firmware free of charge via an Internet connection.

Details & Specifications

MODEL INFORMATION
Model: BTD 700
Article No.: 700434
Warranty: 24-month warranty (Europe, Middle East); 12-month warranty (North America, Latin America, Caribbean, Asia-Pacific)

BLUETOOTH SPECIFICATIONS
Bluetooth version: Bluetooth 5.4 compliant, class 1
Transmission frequency: 2,402 MHz to 2,480 MHz
Modulation: GFSK, π/4 DQPSK, 8DPSK
Profiles: HFP, A2DP, Auracast™
Output power: 10 mW (max)
Codec: Qualcomm aptX, Qualcomm aptX Adaptive Audio, Qualcomm aptX Lossless, SBC, LC3
Device name: BTD 700
Range: Up to 10 m / 33 ft

COMPATIBILITY
Compatible operating systems:
Windows 10 or higher
Mac OS V11 and V12
Android 13 or higher
iPhone or iPad with USB-C
Compatible with: All Bluetooth headphones

CONNECTIVITY
USB interface: USB 2.0
Power supply: 5V DC, 100 mA
Input voltage: 4.75 to 5.25V DC
Operating current: ≤ 100 mA
Standby current: < 2.5 mA

CONTROLS & INDICATORS
Pairing button: Triggers device functions including pairing process, codec switching, mute function, reconnection, Auracast broadcasting mode, gaming mode, and profile switching
Status LED: Indicates operating state of dongle including pairing status, connection status, codec in use, mute status, Auracast mode, and gaming mode

FEATURES
One-button pairing: Simple pairing process with Bluetooth headphones
Automatic reconnection: Dongle automatically reconnects to last paired headphones
Codec switching: Switch between LC3 and Bluetooth Classic mode (aptX Lossless, aptX Adaptive, aptX, SBC) during playback
Mute function: One-button mute during calls
Auracast broadcasting mode: Multi-device audio streaming to multiple headphones or speakers simultaneously
Gaming mode: Low latency mode (30ms) for real-time audio-video sync
Profile switching: Switch between Bluetooth Hands Free Profile (HFP) and Advanced Audio Distribution Profile (A2DP)
Low latency: Optimized audio-video synchronization with aptX Low Latency
Headphone control support: Use controls on headphones for music, videos, and calls
Plug & play: No driver installation required, automatically recognized as external sound card

PHYSICAL SPECIFICATIONS
Dimensions dongle (L x W x H): Approx. 23.8 x 15.2 x 7.6 mm / 0.9 x 0.6 x 0.3 in
Dimensions adapter (L x W x H): Approx. 25.69 x 15.2 x 7.6 mm / 1.0 x 0.6 x 0.3 in
Weight dongle: Approx. 2.2 g / 0.08 oz
Weight adapter: Approx. 3 g / 0.11 oz
Temperature range operation: 0°C to +45°C / 32°F to 113°F
Temperature range storage: -25°C to +70°C / -13°F to 158°F
Relative humidity (non-condensing): < 85%

SOFTWARE SUPPORT
Firmware updates: Available via Sennheiser Dongle Control program (PC/Mac)
App support: Sennheiser Transmitter Updater (PC/Mac)

INCLUDED ACCESSORIES
BTD 700 USB-C dongle
USB-A to USB-C adapter
Quick guide
Safety guide
Compliance sheet