Drumstone Wireless Bluetooth Headphone HM1000 in-Ear V4.0 Stealth Earphone Headset Handfree Size name:Headset Only   Product Description Bluetooth Wireless Business Earpiece V4.0 Lightweight Noisy Suppression Bluetooth Earphone with Microphone for Phone/Laptop/CarBluetooth Headsets for cell phones, these lightweight wireless earphones will be a perfect choice that helps you can take calls, listen to music and more. Ideal for business, office and driving.  Ultra Soft and Very Comfort Come with three different sizes of Ear cap which are soft and flexible, the bluetooth earbuds fit better in your ear and the rotatable flip-boom arm that goes over and behind your ear, it is securely in place without creating pressure on the back of the ear Decent Audio Performance The Bluetooth Headset with mic is aided by noise-canceling technology, which can block out the background noise so the receiver hears you crystal clear. A2DP allows for music playing while some bluetooth headphones only support pick up calls. Free to UseThe lightweight sweatproof headphones support pair with two Bluetooth-enabled devices simultaneously at the working distance of 33 feet.One key to power on and enter pairing mode.Technical Details: Bluetooth Version: V 4.1Micro USB charging portSupport HFP, HSP, A2DP, and AVRCP profilesOperating Range: up to 33 feet (10 meters)Talk time: 6.5~9 hoursMusic play time:6~7hoursStandby time: 180 hoursCharging time: about 1.5 hoursSupport iPhone battery indication