Portable Bone Conduction Horn

Physical specs: small-scale metal unit designed for tactile coupling rather than airborne emission. Net weight under 100g; dimensions optimised for palm or pocket storage. Power system: 400mAh lithium-polymer cell rated for repeated charge cycles. Audio engine: 3W bone conduction actuator tuned for clarity across mid-bass to treble (120Hz–16kHz). Wireless: Bluetooth 5.0 compliant with stereo A2DP profile and hands-free HFP, plus native FM radio circuitry. Input: USB-C port (5V/1A max) — supports standard charging bricks and power banks. Microphone: embedded high-SNR mic for clear voice pickup during calls or voice commands. Operational principle relies on mechanical vibration transmission — the unit must be firmly attached to a resonant object. Performance peaks with thin-walled, air-filled cavities (e.g., plastic drums, cardboard boxes, hollow furniture), where vibrations excite natural modes and produce rich, textured output. Compatible with smartphones, tablets, laptops and FM broadcast signals. Use cases span personal entertainment, remote work audio, educational demos, DIY instrument building and ambient sound design. FM reception benefits from outdoor placement and active USB power supply — helps maintain signal lock and reduces static interference. All measurements approximate within ±1–3cm; colour representation may vary slightly depending on display hardware and ambient light conditions.