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Sennheiser RS 275 Wireless Headphones (with Transmitter)
Experience immersive TV sound with our pre-paired Bluetooth TV headphone and transmitter bundle. The RS 275 TV Headphones deliver virtual surround, crystal-clear, in-synch dialog, and up to 50-hour battery life – watch comfortably your way without disturbing others.
| Product Specification: | Headphones HDR 275 |
| Wearing Style: | Wireless headband |
| Ear Coupling: | Over-ear |
| Connectivity: | Bluetooth Auracast™, Bluetooth 5.4, USB |
| Transmission Frequency / Modulation: | 2,400 – 2,483.5 MHz / BLE: GFSK |
| Supported Profiles: | A2DP, AVRCP, HFP, HSP, GATT, PBP, BAP |
| Supported Codecs: | LC3, AptX, SBC, AAC, AptX Adaptive |
| Speaker Principle: | Dynamic |
| Speaker Type / Size: | 37 mm diameter |
| Speaker Frequency Range: | 6 Hz to 22 kHz (–10 dB) |
| Speaker Sensitivity: | 104 dB SPL (1 kHz / 0 dB FS) |
| Speaker THD: | < 0.3% (1 kHz / 100 dB SPL) |
| Active Noise Cancellation: | No. Passive damping with Ambient Awareness mode |
| Microphone Principle: | MEMS |
| Microphone Frequency Range: | 50 Hz to 10 kHz (–3 dB) |
| Microphone Pick-up Pattern: | 2 omni-directional microphones |
| Battery Lifespan: | Up to 50 hrs playtime via Bluetooth (test condition: music playback with AAC codec, medium volume level) |
| Charging Time: | Approx. 2 hrs for full charge |
| Battery Type: | Replaceable, rechargeable lithium-polymer battery |
| Power Supply: | 3.7 V ⎓, 420 mAh, 1.554 WhUSB charging via USB-C socket at BTA1 |
| Magnetic Strength Field: | 1.9 mT |
| Product Weight: | Approx. 195 g (6.9 oz) |
| Product Dimensions (Folded Flat): | 160 × 210 × 80 mm (6.3 × 8.27 × 3.15 in) |
| Product: | BTA1 TV Transmitter |
| Connectivity: | Bluetooth Auracast™ |
| Transmission Frequency / Modulation: | BLE 1M: 2,402 MHz to 2,480 MHzBLE 2M: 2,404 MHz to 2,478 MHz (without 2,426 MHz)BLE: GFSK |
| Transmission Range: | 50 m |
| Supported Profiles: | BAP, PBP |
| Bluetooth Codecs: | LC3 |
| Inputs: | Digital input: Optical mini Toslink, HDMI ARCSupported data streams: Stereo PCM 44.1–48 kHz / 16–24 bit, AC-3 (Dolby Digital), max. bit rate 640 kbpsAnalogue input: 3.5 mm stereo jack socket |
| Power Consumption: | Input: 5 V DC, 1000 mA max. (USB power via TV or external USB source)Output: 5 V DC, 500 mA max. (USB port for charging headphones) |
| Product Weight: | Approx. 100 g (3.5 oz) (without cable) |
| Product Dimensions (W × H × D): | 130 × 20 × 56 mm (5.12 × 0.79 × 2.20 in) |
| Latency: | Approx. 50 ms |
| Operating Conditions: | Temperature: 0 to +40 °CRelative humidity: 10 to 80%, non-condensing |
| Storage Conditions: | Temperature: −20 to +60 °CRelative humidity: 10 to 90% |
| App Support: | Sennheiser Smart Control Plus app for iOS™ and Android™ |
| Country Of Origin: | Made in China |
| Battery Information (Left Unit): | Lithium-Ion cell (single) |
| Quantity Inside Product: | 1 |
| Quantity Outside Product: | 0 |
| Vendor: | Synergy |
| MPN: | AHB651935HP |
| Battery Capacity: | 420 mAh |
| Battery Size / Format: | Height: 41.0 mm / Width: 24.0 mm / Depth: 8.8 mm |
| Battery Voltage: | 3.7 V |
| Battery Weight: | 12.2 g |
| Battery Energy: | 1.55 Wh |
| Lithium Content (Primary): | 0.21 g |
| Contents: |
HDR 275 Headphones with User Replaceable Battery– TV Transmitter BTA1– TV Audio Digital (Toslink to Mini Toslink Optical Cable)– TV Audio Analogue (Audio Cable 3.5 mm)– USB A-C Cable– USB C-C Cable– Headphone Stand– User Information |
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