Released: 25th March 2021. The HD 250BT deliver a thrilling audio experience, with Sennheiser’s famed transducer technology ensuring higher quality audio with dynamic bass. Thanks to a 25-hour battery life, advanced wireless technology and rugged design they can keep pace with the busiest lifestyles.
High-quality sound with dynamic bass
AAC, aptX™ codec support and aptX™ Low Latency
25-hours of battery life
Smart Control App with equalizer function
Advanced wireless Bluetooth 5.0 technology
Specifications
General Data:
Ear coupling: Supra-aural
Transducer: 32 mm
Transducer principle: Dynamic
Acoustic Principle: Closed
Power supply:
Built-in rechargeable lithium-polymer
battery: 3.7 V ⎓, 190 mAh
USB charging: 5 V ⎓, 100 mA max.
Charging time: Up to 3 hrs
Operating time: Up to 25 hrs
Temperature range:
Operation: 0°C to +40°C
Charging: +10°C to +40°C
Storage: –20°C to +60 °C
Relative humidity:
Operation: 10 to 80%, non condensing
Storage: 10 to 90%
Weight (headphones): Approx. 125 g
App support:Sennheiser Smart Control App for iOS™ and Android™
Bluetooth:
Version: Bluetooth 5.0 compatible, class 1, BLE
Transmission frequency: 2,402 MHz to 2,480 MHz
Modulation: GFSK, π/4 DQPSK, 8DPSK
Output power: 10.0 mW (max)
Profiles: HSP, HFP, AVRCP, A2DP
Codec: aptX™, aptX™ Low Latency, AAC, SBC
Headphones
Frequency response: 20 Hz to 22,000 Hz (-10 dB)
Sound pressure level (SPL): 110 dB (1 kHz/0 dBFS)
THD – total harmonic distortion (1 kHz, 100 dB SPL): < 0.3 %
Microphone
Microphone principle ECM
Microphone frequencyresponse: 100 Hz to 10,000 Hz
Sound pressure level (SPL): -44 dbV/Pa
Microphone pick-up pattern (speech audio):
Omni-directional microphone
Single mic
Packaging
Content of Box:
HD 250BT Wireless Headphones
USB-C Charging Cable
Quick Guide and Safety Guide
Packaging type: Carton Box
Language on packaging: English, German, French, Spanish, Simplified Chinese, Japanese
Dimensions product packaging (L x B x H): 85 x 200 x 235 mm
Weight of headphones with packaging: 315.2g
Dimensions of outer master carton (L x B x H): 455 x 420 x 265 mm
Number of products per outer master carton: 10
Total weight of outer master carton & products: 5,347g