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| Sennheiser Accentum True Wireless Earphones Specifications | |
| Wearing style | True wireless stereo earphones |
| Ear Coupling | Ear canal |
| Connectivity | Bluetooth 5.3 compliant, class 1, 10 mW (max) Bluetooth Classic and LE Audio supported |
| Transmission frequency / modulation | 2,402 MHz to 2,480 MHz; GFSK, π/4 DQPSK / 8DPSK |
| Supported Profiles | A2DP, AVRCP, HFP, TMAP, PBP |
| Supported codecs | SBC, AAC, aptX™, LC3 |
| Speaker principle | Dynamic |
| Speaker type/size | TrueResponse™ dynamic, 7mm diameter |
| Speaker frequency range | 5 Hz to 21 kHz |
| Speaker sensitivity | 107 dB SPL (1 kHz / 1 mW) |
| Speaker THD | <0.08% (1 kHz / 94 dB) |
| Speaker impedance | Not applicable (active BT headphones) |
| Active Noise Cancellation | Hybrid Adaptive ANC |
| Mic principle | MEMS |
| Mic frequency range | 100 Hz to 10 kHz |
| Mic pick-up pattern | 2 mics per earbud, beamforming for noise reduction |
| Battery lifespan |
Up to 8 hrs music playtime with earbuds (ANC off) Up to 6 hrs music playtime with earbuds (ANC on) Up to 28 hrs overall music playtime with charging case (Test condition: iPhone, mid volume level 85dB) |
| Charging time |
Approx. 1.5 hrs for fully charged After 10 min charging 1 hr music playtime Remark: Ambient temperatures <15°C or >30°C and Qi wireless charging leads to extended charging times |
| Battery type |
Built-in Lithium-Ion rechargeable batteries Left/right earbud: 55 mAh Charging case: 400-420 mAh |
| Power Supply | 5 V⎓, 1000 mA max; USB charging via USB-C socket at charging case; Qi Wireless charging |
| Magnetic strength field | Earbuds: 53.7 mT, charging case: 101.7 mT |
| Weather resistance | IP54, splash resistant (earbuds only) |
| Product weight | 52 g (both earbuds and charging case) 5.5 g (single earbud) 41 g (charging case) |
| Product dimension | 49.45 x 51.72 x 28.95 mm (earbuds and charging case) |
| Operating condition | Operating Temp: 0 to +40°C Charging Temp: 5 to +35°C Rel. humidity 10 to 80%, non-condensing |
| Storage condition | Temp: –20 to +60°C Rel. humidity 10 to 90% |
| App support | Sennheiser Smart Control app for iOS™ and Android™ |