Wireless over-ear headphones DEFENDER Freemotion B480 — Bluetooth, USB-C, 20–20000 Hz, 99 dB sensitivity, AUX in, closed acoustic system

DEFENDER Freemotion B480 are wireless over-ear headphones with Bluetooth connectivity, USB‑C charging and an AUX input. The closed acoustic design and a frequency range of 20–20000 Hz provide balanced sound reproduction, while 99 dB sensitivity ensures clear playback. The binaural head‑band construction is intended for universal everyday use and comes as a single headset. Do not disassemble or modify the product yourself.

Advantages

Wireless connection via Bluetooth and the option to use AUX-in give flexible connectivity. USB‑C port supports modern charging. Closed circumaural cups help isolate external noise and improve bass response. The universal head‑band fit suits extended listening sessions.

Suitable for

• Listening to music at home or on the go
• Watching videos and movies
• Online meetings and voice calls
• General multimedia and gaming use

Key specifications

• Type: Wireless over-ear (circumaural) headphones
• Connectivity: Bluetooth, AUX-in
• Charging/port: USB‑C
• Acoustic system: Closed
• Frequency response: 20–20000 Hz
• Sensitivity: 99 dB
• Wearing style: Head‑band, binaural

How to use

Charge the headset using the USB‑C port before first use. To connect wirelessly, enable Bluetooth on your source device and pair with the headphones following the pairing procedure. Alternatively, plug an audio cable into the AUX-in jack for a wired connection. Adjust the head‑band and ear cups for a comfortable fit. Follow common safety practices and avoid exposing the device to liquids or extreme temperatures.

Usage recommendations

Do not disassemble or modify the product yourself. For best audio performance, ensure a stable Bluetooth connection or use the AUX-in cable. Keep the headphones clean and store them in a dry place when not in use.