Feature: 1. Plug-and-play design—simply connect and use immediately. Enhances phone speaker volume up to 5x for clearer, more impactful sound. 2. Upgraded connectivity—no setup required. Fast, seamless pairing in under one second. Eliminates complicated configuration. 3. 5x sound amplification—boosts audio output and enriches the listening experience with immersive sound. 4. High-volume performance combined with premium sound quality. Features a powerful passive radiator to enhance both loudness and audio fidelity. Multi-scenario use: music playback, voice navigation, mobile gaming. Control: Long press to power on/off; short press to mute/unmute. Built-in rechargeable battery with Micro-USB charging port. Audio playback does not drain phone battery. Supports simultaneous charging and playback. Full charge in 45 minutes provides up to 6 hours of continuous use. Specifications: Note: “A 3dB increase in sound pressure level represents a doubling of perceived loudness.” Speaker driver: 32mm, FO ≤ 80Hz Output power: 2W RMS (THD ≤ 10%, f = 1kHz) Frequency response: 80Hz – 20kHz Signal-to-noise ratio: ≥ 85dB Battery capacity: 250mAh Playtime: Up to 6 hours Charging time: 45 minutes Standby time: Up to 240 hours Color: Transparent Material: Plastic Slight variations in appearance between batches may occur—does not affect functionality. Package Includes: 1 x Speaker 1 x Charging Cable