Experience innovative audio with bone conduction technology that transforms solid surfaces into resonating speakers. This compact device delivers 3W sound output up to 115dB through materials like glass, plastic containers, or wooden surfaces. Features dual functionality as an FM radio and hands-free calling device with built-in microphone. Equipped with Bluetooth 5.0 for stable connections and wireless stereo pairing capability. The 400mAh polymer battery provides up to 6 hours playtime via standard Type-C charging (5V/1A input). Ultra-portable metal construction (123.52.5cm) weighs only 150g for easy carrying. Includes universal compatibility with smartphones, tablets, and laptops. Ideal for outdoor activities, office use, and immersive gaming audio experiences. FCC/CE/RoHS certified safety standards. Package includes speaker unit and USB-C charging cable. Color variations may occur due to screen display differences. Measurement tolerance 1-3cm