MORUL&reg; Wireless Bluetooth 4.1 Smart APP Control Sports Earphone Headset Accessories Earbud Noise Reduction NFC 1. Product Type: Smart sports earphone; Wearing Type: Earbud 2. Noise Reduction: Support echo cancellation and noise reduction 3. Charging Time: 2 hours; Call Time: 8-10 hours 4. Functions: Smart APP control, Wireless sports earphone, HIFI sound quality, Remote photo taking, Bluetooth wireless talking, Connect two devices simultaneously, Compatible with all intelligent devices and social software. 5. Features: With specially designed smart APP, wireless sports function: exercise track recording and sports alert