Features:
1. secure automatic answering of cell phone calls.
2. 1200m Bluetooth communication distance between the five intercom lines.
3. support mp3 / GPS / cell phones.
4. eight hours of talk time.
5. automatic pairing link with cell phones with NFC function.
Specifications:
Bluetooth version: 5.1
Remote control distance: 10M
Chip: CSR BC5
Battery capacity: 550
Battery type: Polymer
Charge and discharge times: 500
Operating voltage: 3.3V-4.2V
Talking time: 8 hours
Standby time: 120H
Charging time: 2.5H
Radio frequency band: FM87.5~108MHz
Speaker power: 0.25W
Operating temperature range: -10 to +45
Charger specification: DC 5V 1000mA