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Headphones Headphone sensitivity: 100 dB Total Harmonic Distortion (THD): 0.2% Headphone frequency: 10 - 30000 Hz Ear coupling: Circumaural Impedance: 80 ? Maximum input power: 1 mW Microphone Microphone type: Not available Packaging content Quantity

Battery Battery capacity: 122 mAh Charging source: USB Talk time: 7 h Battery type: Built-in battery Battery recharge time: 1.5 h Battery technology: Lithium Polymer (LiPo) Battery operated: Yes Headphones Headphone frequency: 100 - 20000 Hz Impedanc

Battery Battery charge time (AC): 2 h Continuous audio playback time: 60 h Headphones Headphone frequency: 6 - 22000 Hz Driver diameter: 42 mm max SPL: 106 dB Active Noise Canceling: Yes Impedance: 470 ? Performance Wearing style: Head-band Product c

Battery Battery recharge time: 2.5 h Standby time: 300 h Fast charging: Yes Charging source: USB Input voltage (earpieces): 5 V Talk time (ANC off): 20 h Headphones Noise canceling: Yes Acoustic system: Closed Headphone frequency: 20 - 20000 Hz Ear c

Headphones Impedance: 25 ? Headphone frequency: 5 - 30000 Hz Acoustic system: Closed Total Harmonic Distortion (THD): 0.2% Ear coupling: Circumaural Maximum input power: 100 mW Driver type: Dynamic Headphone sensitivity: 97 dB Microphone Microphone t

The Engage 75 SE makes calls more efficient. It has two high-quality microphones that work together to provide better voice quality. The Engage 75 SE is ultra-light and has intelligently designed angled ear cushions that ensure an optimal fit and hig

The Engage 75 SE makes calls more efficient. It has two high-quality microphones that work together to provide better voice quality. The Engage 75 SE is ultra-light and has intelligently designed angled ear cushions that ensure an optimal fit and hig

Base station Base station colour: Black Battery Talk time: 13 h Battery recharge time: 3 h Standby time: 50 h Battery technology: Lithium Polymer (LiPo) Headphones Noise canceling: Yes Driver unit: 3.2 cm Ear coupling: Supraaural Impedance: 32 ? Head

The Poly Savi 8240-M Office is a mono in-ear headset designed to be worn in one or both ears. The Savi 8240-M Office connects to mobile devices, PCs, and DECT phones via Bluetooth and a USB dongle. With a talk time of up to 7 hours and a standby time

Battery Talk time (ANC off): 20 h Battery recharge time: 2.5 h Input voltage (earpieces): 5 V Standby time: 300 h Charging source: USB Fast charging: Yes Headphones Driver type: Dynamic Acoustic system: Closed Headphone frequency: 20 - 20000 Hz Ear c

Battery Fast charging: Yes Rechargeable battery: Yes Battery operated: Yes Standby time: 7008 h Wireless charging: Yes Battery recharge time: 2 h Battery type: Built-in battery Battery technology: Lithium-Ion (Li-Ion) Charging source: USB Battery cha