Foldable Bluetooth Headset, Beartwo Lightweight Retractable Bluetooth Headphones for Sports&Exercise, Noise Cancelling Stereo Neckband Wireless Headset (with carry case)

How to switch the language?--Press and hold the MFB and volume"+" simultaneously for 2 seconds.How to change the volume or skip songs?--During the call or playing, long press volume"+" or "-" to change the volume level;during the playing, single press the volume"+" or "-" to skip songs.How to activate siri?--Open siri interface, then double click the vol"+".why does the headset model never show on the phone?-- Please try to restore to the factory settings to repair. (Long press the MFB while charging until the blue light flashes 3 times.)How to pair the headset with 2 mobile phones.After successfully paired with a mobile phone, close the bluetooth function of the mobile phone, and switch the button to OFF;Same procedure to get the second mobile phone paired with Beartwo bluetooth headset;Turn on the bluetooth function of the first mobile phone; connect to finish the pairing status with the second mobile phone.Provides up to 16 hours of continuous talking/music time and 300 hours of standby with a single charge, perfect choice for all day outdoor activities.iOS Battery Indicator,you will know exactly how much battery is left when the headset  is paired with iPhone or iPad,since the remaining battery life will be shown alongside the Bluetooth icon. Weight: 67g/2.36oz Working Distance: about 33feet Transmitting Power: class 2 Support: HSP HFP A2DP AVRCP Talk Time: 16 hours max Music Time: 16 hours max Charging Time: about 3.5 hours Standby Time: more than 300 hours