PSSH-55M. Bluetooth communication and multi-person intercom Bluetooth 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. Smart helmet model: PSSH-55M Main material: PC+EPS Head circumference size: 55-59cm, 310g Battery capacity: 3.7V / 450mAh (1.665WH) Video resolution: 1080FHD 1920x1080 Intercom function: multi-person group real-time intercom Smart Alert: SOS Location Rescue 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: Magnetic charging port 3h Standby time: 180 days Intelligent voice/remote control dual-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 light+left/right turn signal>10h Operating System (iOS): Mac ios Android Step Price (FOB): 1. Single price USD230.80 2. 20set, USD96.92 3. 40set, USD87.23 4. 60set, USD78.51 5. 80set, USD70.66 6. 100set, USD63.59 MOQ 1 starting wholesale item price USD78.51, air freight USD49.00, transportation cycle 14 days to 21 days to the door, support one generation