In Ear Mono Wireless Earpieces with Mic and Music for Sony Xperia 1 III,1 IV, 10 IV, Pro-I, 10 III Lite, 5 III Pro, 5 II, 1 II, 10 II, L4, 5, 1, 10, 10 Plus, L3 (Black)

Pairing InstructionPlease try the following steps to pair your phone with the Wireless:1 - Start with the headset powered off.2 - Press In And Hold The Call Control Button (On/Off Button, sometimes needs longer than 9 seconds) Until The Headset Flashes Red, Blue, Red, Blue.3 - Tell your phone to "Find the new Wireless device" (see the User Guide).Please notice the second step is very important. You need to hold the Call Control Button long enough (about 9 seconds) to the headset blinks blue and red alternately to enter pairing mode.