Caller ID number, full smart English tone prompt, power on, pairing, power off the phone, etc For IOS power display, after the iPhone is connected to the headset, there is a power display, you can watch the power of the headset at any time One for two connections, the headset can connect two mobile phones at the same time Every time the Bluetooth headset is connected to the phone, the Bluetooth headset will automatically connect back to the phone when it is turned on, which is convenient and faster Smart compatibility: Supports all Bluetooth-enabled mobile phones, tablets, and notebooks. Compatible with more than 100% of APP, player, TV, chat, etc True wireless link (TWS) stereo,left and right channel separation,HIFI sound,left and right sides Ears are complete with bluetooth function,can be used alone ,also can be used in pairs. About pairing: pairing with one earbud: Long press the multi-function button until the led flashing in red and blue alternately then on the wireless on your device and select ‘i7s TWS’ on your list the would be reminding voice saying connected then you could enjoy music or making phones calls it supports reporting incoming calls Pairing with two earbud： 1. Clear the original Bluetooth record 2. Turn on both earbuds by pressing and hold both multi-function key until the red & blue LED flash alternately, then double click any earbuds and wait for 10 sec for left and right channel pairing ,only one blue LED will flash after pairing success,then turn on your phone’s BT,searching for I7-TWS and connected it . NOTE:THERE would beonlyone eardbud working when making/answering phone calls but both sides could control control power off/play /pause function individually when connected the other one would be synchronized memory function supports connecting devices automatically if being. Description: Color: White, Black Material: ABS Bluetooth version: 4.2+EDR Program: Jerry 6919-a4 Transmission range: 10 meters Headphone battery capacity: 40 mAh Charging battery capacity: 150 mAh Power: DC5V Product size: 2*2*4.6cm Charging bin size: 6.5*5.5*2.8cm Headphone charging time: 30-40 minutes Headphone playback time: 1-2 hours Charging tank charging time: 1 hour or so Charge the headset: 30-40 minutes Package contents: 2 * Bluetooth headset, 1 * Charging box 1 * Charging cable 1 * English manual 1. If you would like to buy goods over $100 for one time in our store, you can contact our customer service to get discount , the more you buy , the more discount you will get. 2. If you totally spend over $150 in our store , maybe you can leave your personel information ,and we will contact with you and add you to VIP customer group , so you can get discount from VIP Customer Service. We will not divulge your personal information without your permission, and we respect any decision you made, It’s up to you . 1. Preparing Time:we need 12-36 hours to prepare your order according to our numberous orders every day. 2. Please double check your address when you write in aliexpress,if you want change before we ship them out,please notice us the new address. 3. About Customs Duty. In consideration of our customers’ benefit,We are forced to ship your order by regular mail.Please understand,however,customs duty is out of our control we can’t guarante no tax fee and will not bear any tax fee. We sincerely apologize for any inconvenience this may cause you. 1. Before placing your order,please confirm details with us if you have request on items. 2. If you would like to buy thing for wholesale , freely contact us , for wholesale , we have exclusive customer service for you .You can receive better service . 3. Please make payment within 3 days of order if possible. 1.If you are satisfied with our products and services,please leave your postive feedback and 5 stars. 2.If you don’t satisfied our products,pls contact us before you leave negative feedback. 3.We care about our valued customers,and will always try to help you,hope to establish long business with you. 4.Please contact us before leaving any negative feedback or opening and dispute on the site. Please give us the opportunity to resolve any problem.