SENWOW 2 in 1 Bluetooth Earbuds & Car Charger, V4.0 Bluetooth Headset Wireless Earphone Handsfree Headphone With Base Car Charger Kit For iPhone SE 5S 6 6S And Android 2 in 1 Useful Car Kits: Smart Single Port USB Quick Car Charger + Wireless Bluetooth Earbud. Easily To Use: 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. CVC 6.0 noise-canceling technology, allows you to talk clearly in noisy environment. Easy for hands free call: Simply pick up the headset to answer the call and put it back to the base to end the call without press any button. Fast Charging: 2.1 A fast smart charging. Start charging when the car start, stop charging when the car stop. charging all the time with full power.