Original JBL TWS 4 Wireless Earbuds Sound Noise Cancelling I

. to ear (tws) connection: press and hold the touch keys of two earphones for about 3 seconds at the same time, and find one of the side lights every few seconds.2. search for the tws4 bluetooth device while bluetooth is turned on.3. after searching for the bluetooth headset device, pair the connection.the kill is the pairing completed.the headset can't be powered at once, don't turn the volume to the maximum, otherwise it will easily damage the headset. do you want to know the correct way to shut down your headphones?1. drive the headphones from the volume of one-third of the normal listening intensity for 12 hours to 24 hours.2. drive the headphones for 12 hours using two-thirds of the normal listening intensity.3, use the normal listening intensity to drive the headset for 72 hours4, use the normal listening intensity of three-quarters of the volume to drive the headset for 24 hours5, enter the normal use stage6, the volume is not easy to be too large in normal use at the highest vo