The red and blue indicator lights will flash alternately to show it is ready to pair. Open your device's Bluetooth settings and search for " ." Select it to connect. If a password is required, enter Successful Connection:
The headset features a dedicated ON/OFF switch, an MFB button, and Volume +/- buttons. Click the MFB or Switch button once Reject Call Double-click the Switch button Play / Pause Music Click the Switch button once Next / Previous Track Long press Volume + (Next) or Volume - (Previous) for 1s Voice Assistant (Siri) Long press the Switch button for 1 second Mute / Unmute Click the dedicated Mute button Charging & Resetting
A: Some units are shipped in "Locked" mode for legal compliance. The exclusive code is: Rotate the dial: Right, Right, Left, Press, Left, Right. The lock icon will disappear. yyk525 user manual exclusive
To switch modes: Press and hold the Rotary Encoder for 3 seconds.
Most users panic when they see on the display. According to the exclusive service notes: The red and blue indicator lights will flash
All lights work, but no data output. Exclusive Fix: The UART port has entered a "latching state." Bridge the TX and RX pins on the auxiliary port for exactly 2 seconds using a paperclip. This resets the handshake protocol.
To ensure the longevity of your YYK-525 , the manufacturer recommends: Avoid extreme temperatures below 10°C or above 60°C. Click the MFB or Switch button once Reject
: Enable Bluetooth on your smartphone or tablet, search for "YYK-525," and select it to connect.
Peel off the clear plastic insulation film from the copper charging pins on the earbud shaft before the first charge.
Approximately 1.5 hours for both headset and case