Full-duplex voice intercom system with 1 host and 4 headsetsUp to 350M (1120 ft) transmission range over 1.9GHz freqencyUp to 10 hours battery lifeA/B/C group switching function25ms latency over wired headsetsSupports Bluetooth 5.1 audio in/out, with NFC pairingEcho cancellation and active noise reductionAuto screen lock functionPower: USB Type-C power input with USB PD charger support
