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GOSCIEN Bluetooth Headset V5.1 Wireless Earpiece User Manual

YYK-520-2 • July 13, 2025
User manual for the GOSCIEN Bluetooth Headset V5.1, model YYK-520-2. This guide provides detailed instructions on setup, operation, maintenance, and troubleshooting for your wireless earpiece, featuring noise-canceling mic…

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