M4 Mini Smart Bluetooth Audio Subwoofer Home Outdoor Portable Wireless Small Speaker Gift

Power mode: USB Color: white, pink, blue, green, black Frequency response range: 100HZ-20KHZ Built-in battery capacity: 2000mAh-4000mAh (inclusive) Product net weight: 0.25KG Connection method: Bluetooth connection Rated voltage: 3.7 Additional features: card insertion, voice prompt, call function Certification Type: Other Bluetooth Version: 5.3 Number of speakers: 1 Item number: M4 Applicable scenarios: car, desktop, fitness, outdoor, home, mobile, square dance, outdoor lawn Appearance size: 70 * 90mm Rated power: 3 Whether it has a built-in battery: built-in battery Box material: plastic Waterproof grade: not waterproof Effective distance: 10 meters Signal to noise ratio: ≥ 75dB