RIZFLY MY518 Portable FMAM 2-Band Bluetooth Transmitter Radio 1. FM range: FM 64-108MHz, medium wave AM: 522-1710KHz 2. Sensitivity: FM 8dB or less, AM 87dB or less, signal-to-noise ratio of 65dB or less 3. Speaker: 3W 4 ohms 4. Amplifier frequency range: 50Hz-20KHz 5. Supply voltage current: 5V 1-2A 6. Battery capacity: 2500mAh 7. Memory card (not included) maximum support: 128G 8. Bluetooth version: 5.3, support for automatic station search and automatic storage, manual search and manual storage, can manually delete redundant radio stations 9. Packing list: radio, manual, power cord, lanyard 10. Size: about 11.5 x 6.6 x 2.4cm 11. Net weight: about 150.3 grams Features: 1. FM+AM two-band radio, support campus band, Bluetooth headset listening is stereo sound 2. Support bluetooth reception, also can bluetooth transmission (available bluetooth headset listening radio or memory card) 3. Support for inserting memory cards, up to 128G, support for MP3WAVFALC lossless format, although there is no digital button, but the memory card mode can be quickly take the song, support breakpoint memory 4. Support clock, timer onoff (after timer on, automatically play the radio before shutdown, if you listen to the memory card songs before shutdown, automatically play the memory card songs after timer on) 5. Built-in 2500mAh polymer lithium battery, more secure, continuous playback of songs at a medium volume can last more than 20 hours) 6. Type-C charging interface, in addition to charging, but also can be connected to a computer to read the memory card data, download or delete audio files do not need a card reader Attention: 1. When connecting a Bluetooth device, turn on the Bluetooth headset or Bluetooth speaker first, and then turn on the Bluetooth transmitter function 2. This machine can only connect a Bluetooth device, connecting the neighborhood do not turn on the second Bluetooth device, there are link congestion conditions lead to long co