Feature Highlights: 1. Recording Function – In USB/TF card music playback mode, press and hold the mode button to start recording. Press and hold again to stop recording. 2. FM Radio – Equipped with an external antenna for stronger signal reception. Default frequency range: 87.5MHz–108.0MHz. 3. Bluetooth 5.0 with Call Support – Delivers stable transmission and reliable connectivity within a range of up to 10 meters. Compatible with infrared remote control operation. 4. Dynamic Sound Quality & LED Effects – Integrated amplifier provides loud, clear audio without distortion. Features multi-color LED lights that sync with music frequency for an immersive atmosphere. 5. Easy DIY Assembly – Designed as a soldering practice kit to help beginners learn basic electronics and circuit principles while improving hands-on skills. Suitable for hobbyists, students, and DIY enthusiasts. Product Details: This DIY Bluetooth speaker kit is built with a durable plastic casing and utilizes an anti-interference audio amplifier chip for powerful, distortion-free sound. It supports multiple playback modes: Bluetooth, USB, TF card, and FM radio. The bottom panel includes a pull-out design for easy access to stored items. No tools are required for assembly—simple soldering is needed to complete the kit. Ideal for learning electronics, practicing soldering, and creating a personalized portable speaker. Specifications: - Working Voltage: DC 5V (recommended power supply: 2A fast-charging adapter) - Working Current: Approx. 1A (varies with playback mode and volume) - Standby Current: About 40mA (no audio playback) - Output Power: 2×3W - Bluetooth Name: "JQ BT" - Material: Plastic - Color: As shown in images - Package Includes: 5 sets of DIY Bluetooth speaker kits (components require soldering) Notes: - Some soldering experience and patience are required for assembly. - Slight variations may occur due to different production batches, but this does not affect normal use. - Slight color differences may appear due to lighting and display settings. - Measurement tolerance: ±1–3 cm. - Package includes only the listed items; other accessories are not included.