Livall BH51M Nso, Smart Cycle Helmet, With JBL Speakers, 57-61cm, (Black) BH51M NSO

Master Control System ● Stable Bluetooth Connection ● Automatic Identification on Target ● IPX4-Waterproof Hands-Free ● Don't Miss Important Calls● Get a Clear Voice SOS Alert ● Immediate notification of your accident to your family is exceptionally important *Connection to LIVALL App through the internet is required(which causes some telecommunication cost) to realize this function   Net Weight Approx. 470g Speaker Stereo 2 x 0.5W Microphone -42bB Buttons Power on, volume+, volume- Battery Capacity 3.7V/600mAh, 10hrs [lights], 3-6hrs [music + lights] Battery Type Rechargeable Lithium-ion Battery Duration 10hrs [lights], 3-6hrs [music + lights] Charging Time approx. 3h Charging Type Magnetic, DC 5V/0.5A, Charging Port USB Ventilation System 12 Vents Bluetooth Bluetooth 4.2 Compatibility IOS 6.0/ Android 5.0 and above Supported Languages 12 (English, Simplified Chinese, Traditional Chinese, Russian, French, German, Italian, Spanish, Dutch, Polish, Japanese, Korean) Product Size L: 58-62cm Water Resistant IPX4 Waterproof