Bluetooth Earbuds, Grandbeing V4.0 Bluetooth Headphones Invisible Smallest Mini Wireless Headset Hands-free Stereo Earphone with Mic for iPhone Samsung HTC Smartphones iPad Tablets, Khaki Advanced Technology: Latest Bluetooth V4.0 chipset, steady signal and lower power consumption. Effect wireless transmission distance up to 33 feet / 10m(Depend on Environment) between your smartphone and bluetooth earbud. Noise-canceling technology, allows you to talk clearly in noisy environment. Ultra-small Appearance: Maybe this is SMALLEST Bluetooth earbud on market. Invisible design, super mini size, you will feel it barely not there in your ear. Applicable to answer the call while driving or working with full hands. Compact, portable and lightweight, no extra burden. Small body, Great function. Support one button(MFB) to Answer/Reject call, Pause/Replay song; Support to Volume +/-, Previous/Next song; Support to connect two Bluetooth devices simultaneously; Support voice prompt; Support in-coming call phone number reporting; Support Voice Control by saying Yes/No to answer or reject call to enable your safe driving. Comfortable Wearing & Long Battery Life: With soft rubber earcaps for your option. Free earhook helps the headset stay in your ear firmly. Additional accessory wired headphone will make the headset become a pair of stereo headphones. Seamlessly swift to work or listen to music; About 3hr music-playing time, or 4hr talking-time after 1.5hr fully charged. Great Compatibility: Free access to all Bluetooth devices, such as iPhone 6s Plus / 6s, iPhone 6 Plus / 6, iPhone 5s / 5, iPhone 4s /4 , iPad Air / iPad Mini; Samsung Galaxy S6 Edge Plus / S6 Edge / S6 / S5, Note 5/ 4 /3 /2, Samsung Tablets ; HTC A9 / M9 / M8 / M7 ; Google Nexus 6P, etc.