 
     
      
      
      
    | 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™ |