Description: Sound: Enjoy crystal clear audio with our DIY Bluetooth Speaker Kit, for music enthusiasts and tech-savvy individuals Digital Display: Easily tune into your favorite FM radio stations with the digital display feature included in our FM Radio Soldering Practice Kits Bluetooth Connectivity: Connect your devices seamlessly and wirelessly to our Mini Home Sound Electronics Kit for a hassle-free listening experience STEM Project: for students and hobbyists looking to improve their soldering skills and learn more about electronics in a fun and interactive way Remote Control Included: Control your DIY Bluetooth Speaker Kit from a distance with the convenient remote control, making it easy to adjust settings and volume levels Specification: Material: Metal+Acrylic Product: Bluetooth 5.0 speaker with voice-controlled level indicator Model: JQ-D017BT Working voltage: DC5V (can be powered by 5V1.5-2.1A USB charger) Working current: recommended. 2A or above Main functions: Bluetooth 5.0 reception, USB, S/D card, FM radio playback Voice call, for AUX input Output power: 2.0 dual-channel 3WX2 Music metronome circuit board size: 100X30MM Acrylic shell size: 148X68X81MM Shell Color: Black/ Transparent(Optional) DIY Kits It has functions such as wireless Bluetooth, USB, S/D card, and FM radio playback. It has high output power and loud sound (slightly modified external speakers make the sound more shocking). The shell is assembled with acrylic, available in black and transparent. It has added LED voice-controlled music level indicator circuit, so you can enjoy different visual effects while listening to songs The Bluetooth module has its own amp, which is a finished board with a panel that has been welded and tested. The amp part uses an anti-breaking chip, which is almost distortion-free Bluetooth name: JQ-BT, turn on the mobile phone or tablet Bluetooth search and pair to connect. The FM radio needs to add an antenna. You can find a suitable wire to weld to the antenna solder point and coil it in the case to increase the sensitivity of the radio The level indicator consists of four LM358 main control chips and 12 LEDs. The sensitivity is adjustable and requires manual welding. After welding, take 5V power from the Bluetooth board to work. When there is a music signal, the LED light flashes from the middle to both sides, with a strong sense of rhythm, which is incomparable to CD4017 Package Includes: 1Set DIY Bluetooth Speaker Kit (As Picture)