Is there an AC adapter that can charge it by simply plugging it into an outlet?

Simply plug it into an outlet or any PC USB. It will be charged. Very simple.

Does the display show song info when connected with bluetooth or just radio stations and sd card info?

It just shows radio station numbers I don't know about sd card info.

Can you use it without the battery?

No, you must have a charged/charging battery for this unit to work. I've never been able to get it to work plugged into USB, but without the battery installed.

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Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

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SP850 – Portable 3-in-1 FM Radio with Bluetooth Speaker

Product ID: 33559918

Details

Brand
Avantree
Color
Black Red
Connectivity Technology
Bluetooth
Included Components
Bluetooth USB
Power Source
Battery
Product Dimensions
5.12"L x x

🎵2W stereo sound output

📻3-in-1 FM/Bluetooth/SD playback

🔋Rechargeable & replaceable battery

¥11822

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In stock

Sold byAmazon JapanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Japan.

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Description

🎧 Stay tuned, stay connected, stay ahead with Avantree SP850!

CRYSTAL CLEAR PERSONAL SOUND - Tuned for balanced, clear voice and music—perfect for focused listening without bulky gear.
EFFORTLESS STATION MANAGEMENT - Auto-scan and numeric key presets let you save and access your favorite FM stations in seconds.
ON THE GO POWER PORTABILITY - Compact design with rechargeable and replaceable battery keeps your soundtrack alive anywhere, anytime.
UNIVERSAL DEVICE COMPATIBILITY - Connect wirelessly or wired to smartphones, tablets, laptops, and more for a truly flexible audio setup.
SEAMLESS 3 IN 1 AUDIO EXPERIENCE - Switch effortlessly between FM radio, Bluetooth streaming, and SD card MP3 playback for ultimate versatility.

The Avantree SP850 is a sleek, pocket-sized 3-in-1 portable audio device combining FM radio, Bluetooth speaker, and SD card MP3 player. It delivers clear stereo sound optimized for personal listening, features quick station presets, and runs on a rechargeable, replaceable battery for ultimate portability. Compatible with a wide range of devices, it’s designed for professionals who demand versatile, on-the-go audio without compromise.

Specifications

ASIN	B01J3N8ICQ
Additional Features	Portable
Antenna Location	Music, News
Audio Output Mode	Stereo
Best Sellers Rank	#14,422 in Electronics ( See Top 100 in Electronics ) #46 in Portable Headset Radios
Brand	Avantree
Built-In Media	Bluetooth speaker, Micro USB charging cable, 3.5mm audio cable, Instruction Manual
Color	Black, Red
Compatible Devices	Speaker, Smartphone, Headphone, MP3 Player, Tablet, Laptop
Connectivity Technology	Bluetooth
Customer Reviews	4.4 out of 5 stars 12,179 Reviews
Display Technology	LED
Display Type	LED
Enclosure Material	Plastic
Frequency	87 MHz
Global Trade Identification Number	06945624902023
Hardware Interface	Bluetooth
Item Dimensions L x W x H	5.12"L x 1.26"W x 2.6"H
Item Type Name	Avantree 3-in-1 Portable FM Radio with Bluetooth Speaker and SD Card Player, Auto Scan Save, LED display, Rechargeable Battery, Transistor Battery Radio (No AM) - SP850
Item Weight	158 g
Manufacturer	Avantree
Mfr Part Number	BTSP-850-BLK
Model Number	BTSP-850-BLK
Number of Batteries	1 CR5 batteries required. (included)
Number of Items	1
Power Source	Battery Powered
Product Dimensions	5.12"L x 1.26"W x 2.6"H
Radio Bands Supported	FM
Speaker Maximum Output Power	2 watts
Special Feature	Portable
Style Name	Modern
Tuner Technology	FM
Tuner Type	FM
Voltage	5 volts_of_alternating_current
Warranty Description	We offer 24 month warranty

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How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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¥11822

Duties & taxes included

In stock

Sold byAmazon JapanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Japan.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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