Equipped with productive wireless helmet factory and company, Fenghuo Hongsheng is one of the leading China wireless helmet manufacturers and suppliers. Welcome to contact us.The wireless helmet is a concentration of wireless communication technology, digital modulation technology, anti-noise and anti-noise send technology for the integration of wireless products. Applicable to the high noise environment short distance wireless communication between staff.the component of productwireless helmet 1set；Lithiumion battery charger 1set；Lithiumion battery 2set（One of the backup battery）；antenna 1set.product characteristics and the main functionProducts using the digital speech enhancement technology, microphone can be sensed in noise environment noise signal filtering, also send words to dual-mode anti-noise microphone, in performance to improve the signal-to-noise ratio of communications and voice intelligibility.Through four slots communication mode, the product is the most significant characteristics with conventional walkie-talkie full-duplex broadcast communication, the function can be completed at the same time send words by words, receive an unlimited number of user and using the technology of voice PTT said without any operation, easy to use, communications within the product group, allow at most four people talking at the same time. Also the products with channel selection, volume control, voice prompt operation, the battery voltage detection, since listening, and other functions, has a strong confidentiality, voice communication and flexible, high system stability, voice clarity and high fidelity, etc. Main Technical Specifications:Operation frequency band：900MHz；Power supply：DC3.6V Lithium-ion battery；TX power≥20dBm；volume: 5channel number：10；continuous working time≥8h；transmission distance≥500m（open area）；audio output≥90dB；earmuffs sound insulation quantity≥25dB (315Hz～8000Hz)；working temperature：-25℃～45℃；storage temperature：-40℃～60℃；max. dimensions：280mm×270mm×260mm；weight：≤900g(No batteries).