Comparison Roidmi 3S vs Roidmi 1S
Add to comparison |  |  |
|---|---|---|
| Roidmi 3S | Roidmi 1S | |
| Compare prices 1 | Compare prices 1 | |
| User reviews | ||
| TOP sellers | ||
2 USB ports for simultaneous charging of gadgets. Fast charging. Backlight. No microphone. | Hands-free function. Two ports for charging gadgets. Nice coloured LED lighting. Quiet microphone for hands-free calls. In some vehicles, it does not fit snugly into the cigarette lighter socket. | |
| Type | FM transmitter | FM transmitter |
| Frequency range | 88.1 – 107.9 MHz | 88.1 – 107.9 MHz |
Features | ||
| Bluetooth |  | |
Interfaces | ||
| USB input | | |
General | ||
| Charging port | USB-A | |
| 24V support | | |
| Added to E-Catalog | november 2017 | may 2016 |
Compare Roidmi 3S and 1S
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Glossary
Charging port
The transmitter has a specialized USB port for charging smartphones, tablets and other external devices.
Note that you can also charge external devices from conventional USB connectors; however, specialized ports provide higher power output, which can significantly reduce charging time. It is also worth mentioning that the specific purpose of such a connector can be different: in some models it works only as a power source, in others it can also be used to connect USB drives. Many FM transmitters have two USB ports — regular and charging; this allows you to simultaneously charge an external gadget and listen to music from a USB flash drive. And in modern devices, the old USB A form factor is supplemented by a modern USB-C port.
Note that you can also charge external devices from conventional USB connectors; however, specialized ports provide higher power output, which can significantly reduce charging time. It is also worth mentioning that the specific purpose of such a connector can be different: in some models it works only as a power source, in others it can also be used to connect USB drives. Many FM transmitters have two USB ports — regular and charging; this allows you to simultaneously charge an external gadget and listen to music from a USB flash drive. And in modern devices, the old USB A form factor is supplemented by a modern USB-C port.