Fangrui Product Details Features:with A 0.96 Inch Oled Display, You Can See The Fm Band, Agc On/off, Mono According To Your Demands Support Auto-hold Setting Function After Power Failure Internal 3.6v 800mah Polymer Lithium Battery For Stable And Sustainable Power Supply Support Usb Recharging Equipped With Audio Output To Support 3.5mm Earphone Description: With 0.96 Inch Oled Display, It Is A Quality Full-band Radio Receiver, Supporting Auto-hold Setting Function After Power Failure. Equipped With Audio Output, It Supports 3.5mm Earphone. Also, It Supports 4ohm Speaker 2w Output. With 22 Commercial And Ham Radio Bands Pre-configured, You Can Use It Freely. Also Support 8ohm Speaker 1.5w Output Antenna Interface Uses Sma Interface And The Printed Circuit Board Retains The Si4732 Package, You Can The Chip By Yourselves, And The Software Is Compatible With 22 Commercial And Ham Radio Bands Pre-configured, You Can Use It Freely Support Band: Fm, Am (mw And Sw) And Ssb (lsb And Usb) Audio Bandwidth Filter 0.5, 1, 1.2, 2.2