1.Open the lid to connect (pop up animation when connect with iPhone System).2. 3 real battery on iPhone (2 earbuds and charging case).3.In-ear sensor, support noise reduction and transparency mode.4.No led on earbuds (the led on charging case will work when the case bagin to charge the earbuds).5.Transmission distance 10 meters, support precise positioning.6.Auto power on and power off.7.Could be used separately or together.8.Bluetooth 5.0.9.The name and tap control of bluetooth device could be changed now (Only work with iPhone System 13.1 or above). Connect with iPhone device :1.Open the lid of case and turn on the bluetooth on device , the pop up function will work . And you will see a notice to press the button on the back of charging case .2.Long press(about 4s) the button , you will see the white led blink . And the earbuds will connect with phone automatically . Connect with Android or other device :1.Open the lid of case and long press(about 4s) the button until make sure that the white led on the charging case blink .2.Turn on the bluetooth on device to found the earbuds bluetooth signal to connect .Include:1X TWS Earphone With Charging Box Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.