Avantree is a global provider of niche wireless audio solutions that focus not just on "surviving," but thriving. At Avantree, we create products that offer users unique audio experiences such as social listening options and customized hearing profiles. We aim to meet consumers right where they're at by designing devices that provide high-quality sound and satisfy user needs. We believe that everyone deserves to enjoy and experience life to the fullest - even those without "perfect" hearing. We seek to create excellent products that cater to this belief.

The Avantree SP850 is a Portable Bluetooth speaker with FM radio and TF card support. It is recommended for use with Bluetooth-enabled devices such as cellphones and tablets when used as a Bluetooth speaker, and it can play any MP3 / WMA / WAV format audio files in SD card mode (up to 32GB). However, it cannot play any songs not encoded in MP3 / WMA / WAV format, and it is not recommended as a wireless speaker for watching TV / movies as you may experience audio latency. Additionally, do not use earphones with an inline controller embedded in the wire, otherwise audio will come from both the earphones and the speaker. The FM radio only supports FM, not AM.

The SP850 is a great "Morning Companion" with its clear sound for morning news and music over breakfast - a great way to start your day. It has strong FM reception and can automatically search and save all available stations in your area. You can also manually input a station using the number pad (e.g. press 1021 to tune to 102.1). The Bluetooth speaker provides clear sound and easily connects to your phone, tablet or any other Bluetooth-enabled device. It also supports Micro SD (Max 32GB) playback - listen to your favorite stories and songs. The volume knob not only controls the volume but also turns the device on, avoiding accidental button presses. The portable design is lightweight (158g), compact size (1303266mm) and has a convenient hand strap, making it easy to bring with you anywhere. It is powered by a Nokia-type Lithium-ion rechargeable battery (BL-5C) that is easy to replace.

In addition to the FM mode and SD card mode, the SP850 is easy to use. In FM mode, you can auto scan and save all stations in sequential order, or manually input a station. In SD card mode, you can press '2' to skip to the second song on your SD card. The Bluetooth work time is up to 10 hours, and the Bluetooth operational range is up to 10 meters. It supports MP3, WMA, and WAV format audio files on the Micro SD card (Max 32G). The speaker output power is 3W, and the speaker frequency range is 90Hz ~ 18 kHz. The charge time is about 2 hours, and the FM work time is up to 10 hours. The FM frequency range is 87MHz to 108MHz, and the charge voltage is 5V--500mA. The size is 130×66×32mm, and the net weight is 158g.

The package includes the Bluetooth speaker, a Micro USB charging cable, a 3.5mm audio cable, and an Instruction Manual. Avantree also offers other products such as the Powerbyte, Audikast 4860, and Boombyte, which have similar features and specifications.

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