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Comparison Roidmi 3S vs Neoline Wave FM

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Roidmi 3S
Neoline Wave FM
Roidmi 3SNeoline Wave FM
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Main
2 USB ports for simultaneous charging of gadgets. Fast charging. Backlight.
TypeFM transmitterFM transmitter
Frequency range88.1 – 107.9 MHz87 – 108 MHz
Features
Screen
Bluetooth
Remote control
Interfaces
USB input
Card reader
Media supportMP3, WMA
General
Charging portUSB A
24V support
Added to E-Catalognovember 2017september 2016

Frequency range

The FM frequency range supported by the FM transmitter.

For normal use of the device, it is necessary that at least part of this range coincides with the tuner range in the car radio, and that there is no full-fledged FM station broadcasting at the selected frequency. However, most modern FM transmitters cover frequencies of the order of 88 – 108 MHz, this is quite enough to find a suitable frequency.

Screen

The presence of a display in the design of the FM transmitter.

Various additional information can be displayed on the display : the set frequency, the signal source used, the name of the song being played, etc. This greatly simplifies device management.

Remote control

The presence of a remote control in the scope of delivery of the FM transmitter.

The ability to control the device from a distance is convenient, first of all, for passengers in the rear seats — for the driver, the remote control on the steering wheel is more relevant (see below), and the “navigator” in the front seat can easily reach the transmitter itself.

Card reader

A slot that allows you to install memory cards in the FM transmitter and play music from them. Most often, card readers are made for SD or microSD form factor cards; however, both varieties have several variations (SDHC, SDXC), so before using such a transmitter, it's ok to clarify which varieties the card reader is compatible with.

Media support

File formats supported by the FM transmitter.

Almost all models support the MP3 format, which is the most common modern digital audio format. Some devices are also capable of working with WMA — this is also one of the main formats, but for a number of reasons it is used much less often. And even less common is compatibility with WAV — this format provides higher sound quality, but with FM broadcasting this advantage is lost, and the files themselves take up noticeably more space than MP3 and WMA.

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.
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