RS 275/255 Specifications

Feature	Specification
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.
Mic principle	MEMS
Mic frequency range	50 Hz to 10 kHz (–3 dB)
Mic 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 lithiumpolymer battery
Power supply	3.7 V⎓, 420 mAh, 1.554 Wh USB charging via USB-C socket at BTA1
Magnetic strength field	1.9 mT
Product weight	Approx. 195 g (6.9 oz)
Product dimension folded flat	160 x 210 x 80 mm (6.3 x 8.27 x 3.15 in)
HAZMAT UN #	UN3481
*	Compatible with any TV with digital or analogue audio output.

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