Chinese smart helmet maker Livall targets food delivery firms as giants such as Meituan work to improve safety for riders | South China Morning Post
LIVALL EVO21 Smart Helmet: 360 Active Protection | Indiegogo
LIVALL BH51M / BH51M Neo Bluetooth Smart Bike Helmet Adult Helmet with Auto Sensor LED Turn Signal Tail Lights, Built-in Mic Speakers SOS Alert Bike Helmet with Visor, for Bicycle, Skateboard, E-Bike : Sports & Outdoors - Amazon.com