WI-C400 | Help Guide | Pairing and connecting with a computer (Windows 10)
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WI-C400 | Help Guide | Connecting to a paired computer (Windows 10)
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Best Buy: Sony C400 Wireless Behind-the-Neck In Ear Headphones Black WIC400/B
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User manual Sony WI-C400 (English - 95 pages)
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WI-C400 | Help Guide | Resetting the headset
WI-C400 | Help Guide | Pairing and connecting with a computer (Windows 10)
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Sony WI-C400 Wireless Review - RTINGS.com
Best Buy: Sony C400 Wireless Behind-the-Neck In Ear Headphones Black WIC400/B
