Description: Model: D4 Bluetooth version:V5.1 Supports Protocol: HFP 1.7, HSP 1.2, AVRCP 1.6, SPP 1.2, PBAP 1.0 Speaker Diameter:10mm Working distance:10-20m Call Time:4-5h(fully charged with medium volume) Play Music Time:4-5h(fully charged with medium volume) Standby time:300h(With charger case) Specifications: Frequency:2402MHz~2480MHz Battery type:3.7V40mA Li Battery Charging Time: 1-2h Working Temperature:-10-55 Input current.:5V 1A Package Included: 1*headphone 1*charging box 1*charging cable 1*User Manual Two Charging Methods&Digital Screen Displaybluetooth headphones support wireless charging and USB C charging,you can choose one of the charging methods that you like or is more convenient for you(Package doesnt include wireless charger). You dont need to guess whether the charging case has enough power,or calculate when its the best time to charge them fully.What you need to do is just opening the lid,the digital screen display will tell you the answer.Good Sound Quality&Wide CompatibilityAMZANE bluetooth earphones adopt bluetooth 5.1 technology, to make the signal more stable, deliver sound much clearer and more real.The wireless earphones also have a built-in mic, you can talk to others through them as if you were talk face to face.Our wireless headphones have wide compatibility,can work with IOS system devices,most android system devices,and most Bluetooth-compatible devices,so you dont need to worry about compatibility issues.35H Playtime & Wearing ComfortableAMZANE wireless headphones can be used for 10 hrs on a single charge, the charging case can recharge the earbuds 2-3 times, so you can get 35 hours total playtime from a fully charged charging case.Our wireless headphones are specially designed to fit humans ear, equipped with three different sizes of eartips to meet different customers requirements, you can choose the best suitable one to enjoy a long music journey.Lightweight&Portable&Easy to ConnectThe wireless earbud is only 0.13 oz, super lightweight,even wearing for several hours, you don’t feel like wear them.charging box size is 2.75*2.75*1.18in, easy to carry. just put them in your pocket or backpack when you go out for a walk or travel. When want to use them, remove the earbuds from the charging case, earbuds will pair with each other automatically. No extra complicated steps.IPX5 Sweatproof &Touch ControlAMZANE wireless headphone are designed with IPX5 sweatproof, meet the needs of daily life,no longer worry about sweating or light rain affecting the use experience of headphones.There is only one switch on each earbud to do all work, touch sensitive area to answer/hang a call,play/pause the song, play the previous/ next songs, adjust the volume and activate voice with simple operations. dont worry about that it makes your ears ache. Reviews There are no reviews yet. Be the first to review “Bluedio D4 Touch Control BT 5.1 In Ear Portable Wireless Earphone with Charging Case” Cancel replyYour email address will not be published. Required fields are marked *Your rating * Rate… Perfect Good Average Not that bad Very poor Your review *Name * Email * Save my name, email, and website in this browser for the next time I comment.