Wireless over-ear headphones DEFENDER EEMOTION B645 — binaural, USB-C, AUX, 20–20,000 Hz, 105 dB sensitivity

DEFENDER EEMOTION B645 are wireless over-ear binaural headphones with a closed acoustic design intended for universal everyday use. The headphones feature a head-band wearing style and provide both wireless connectivity and wired options via USB‑C input and AUX-in. They deliver a frequency response of 20–20,000 Hz and a sensitivity of 105 dB. Do not disassemble or modify the product.

Advantages

The closed circumaural construction offers passive noise isolation and focused sound reproduction. Multiple connection options (wireless, USB‑C and AUX) provide flexibility for different devices. The head-band design ensures stable fit for prolonged listening sessions, while the wide frequency range and high sensitivity support clear audio playback across bass, mid and treble ranges.

Suitable for

• Everyday music listening at home or on the go
• Watching videos and online content
• Wired connection to devices with AUX or USB‑C
• Use with multiple devices via wireless pairing

Key specifications

• Headset type: binaural over-ear (circumaural)
• Acoustic design: closed
• Wearing style: head-band
• Connectivity: wireless; AUX-in; USB‑C input
• Frequency response: 20–20,000 Hz
• Sensitivity: 105 dB
• Recommended usage: universal

How to use

Charge the headphones via the USB‑C port if required, or connect a source directly using the USB‑C or AUX cable. Power on and pair with a wireless device following the device pairing procedure, then adjust volume on the source or headset. Place the head-band over the head with the ear cups fully covering the ears for correct circumaural fit. Follow the device indicators for battery and connection status.

Usage recommendations

Do not disassemble or modify the product. For prolonged comfortable use, take regular breaks and keep volume at a safe level to protect hearing. Store the headphones in a dry, dust-free place when not in use.