Multi-point and Built-in Mic support TURN YOUR CAR INTO A STREAMING MACHINE : Featuring Bluetooth 4.1 technology, our audio receiver plugs into your car audio AUX input and pairs with your favorite Bluetooth enabled device to stream your favorite music. With a built-in microphone, our device also allows you to enjoy crystal clear sound quality on all of your calls. CONVENIENT CONTROL : Adjust the volume, skip a track or answer a call without having to pull out your phone! Additional power on/off switch makes easy to use. Our receiver features convenient controls right at your fingertips. LONG BATTERY LIFE : The device only needs 1.5 hours to fully charge and you can immerse yourself in your music or conversations with up to 8 hours of play time. Also it supports use while charging. Most products in the market will cause noise if use while charging. This product’s noise isolation design eliminate this and makes you enjoy continuous audio. MULTIPOINT: Connect with two mobile phones simultaneously. Easy to switch between your favorite music and an incoming call. Never miss a call again. ENHANCED CALLING EXPERIENCE : Use the included 1M extended AUX cable to fix the bluetooth receiver to an ideal position that captures sounds better. Features * No Lip-sync Delay: Supports fast stream codec. * Compact and Portable: Foldable 3.5mm male header design. * Multipoint Support: Connect 2 devices simultaneously. * Built-in Mic: Echo cancellation & noise suppression. * Long Battery Life: Up to 8 hours of talk time and 120 hours of standby time. * User-friendly Music Controls: Play, pause and select tracks to suit your vibe. Specification * Bluetooth Version: 4.0 * Supported Profiles: A2DP, AVRCP, HSP, HFP * Operation Frequency Band: 2.4GHz~2.48GHz unlicensed ISM band * Operation Range: Class 2, Up to 30ft. * Working Time: 8 hrs * Standby Time:130hrs * Charging Time: about 1.5hrs * Charger Voltage: DC5.0V, 500mA What's in the box * Bluetooth receiver CK210 * 3.5mm extension cable * USB charging cable * Quick user guide / User Manual Packing Info Pack: 120/80/17mm