Retro Phone Handset with Wireless Bluetooth and USB Handsets for Cell Phones Radiation-Proof Comfortable Call (Black)

Retro mobile phone supports internal any bluetooth mobile phone, notebook bluetooth. Features: Support Bluetooth 5.0, support listening to songs, support HFPV1.5 and HSPV1.1, office appearance, with usb handset. Technical parameter: *Working voltage: DC 4V *Battery capacity: 200mAH * Communication time: 12 hours *Standby time: 36 hours *Charger: DC 5V, 300mA *Frequency: 2404-2479MHZ * Communication distance: barrier-free 10M *Charging time: 4 hours Steps for usage: 1. Start the power supply: When using Bluetooth, press and hold the function key until the blue and red lights are on at the same time and flashing. 2. Bluetooth pairing: a Start the Bluetooth function of the mobile phone; b. Turn on the Bluetooth search function; c. Search for the NFXSL model, select the model, and then the blue light flashes, the pairing is successful. 3. Answer the call: When the phone calls, the phone will still ring the ringtone, press the function key at this time to answer the call. 4. End the call: After the call is finished, press the function key to end the call. 5. Reject the call: When the phone calls, press and hold the function key for two seconds, and release it to reject the call. 6. Redial: Redial the last call, double-click the function key or long press the function key for two seconds to achieve the redial function. 7. Power off: press and hold the function key until the red light is on, that is, power off. 8. The indicator light of the earphone shows a red light when charging. When the earphone is fully charged, the red light will turn off and the blue light will be on. The first charging time is about 4 hours.