PSBJL-238.Bluetooth function lighting helmet. It is suitable for safe riding in outdoor sports such as bicycles, mountain bikes, scooters, roller skating, electric motorcycles, rock climbing, road bikes, etc. Bluetooth helmet model: PSBJL-238 Main material: ABS+EPS split molding Head circumference size: S/M(51-58cm) M/L(58-61cm) Battery capacity: 3.7V/500mAh Bluetooth transmission: 10M-12M Speaker: 2x0.5W (stereo) Microphone: -35dB -41dB Bluetooth mode: BT5.2+BLE4.2 (dual mode) Electrical parameters: USB TYPE DC 5V/0.5A Charging mode: plug-in charging port 3h Battery life: 20h Intelligent voice mode operating system: WIFI+APP, answering calls, voice navigation, connection flashing (left turn light, right turn light, double flashing light), MP3 music Function lights: MP3+ light battery life 6h, ARGB LED colorful tail lights + left/right turn signals>10h Operating System (iOS): Mac ios Android Step Price (FOB): 1. Unit price USD123.10 2.20set, USD51.69 3.40set, USD46.52 4.60set, USD41.87 5.80set, USD37.68 6.100set, USD33.91 MOQ 1 starting wholesale item price USD41.87, air freight USD49.00, transportation cycle 14 days to 21 days to the door, support one generation