21V Bluetooth Speaker: Portable Outdoor Subwoofer with Long Battery Life, High Volume, and Superior Sound Quality.

Experience impressive audio performance with this portable outdoor subwoofer, designed for those who value high volume and superior sound quality. Equipped with Bluetooth 4.0, it ensures seamless connectivity with your devices, providing you with the freedom to enjoy your music without the hassle of cables. Despite its powerful sound capabilities, it offers a long battery life, allowing you to keep the party going for hours on end. Ideal for outdoor use, this speaker is the perfect companion for your adventures, although it is important to note that it is not waterproof. Connection: Bluetooth connection Frequency Range: 100HZ-20KHZ Signal-to-Noise Ratio: Below 60dB Number of Speakers: 2 Box Material: plastic Power Supply Mode: lithium battery Waterproof Level: Not waterproof Bluetooth Version: 4.0 Built-in Battery Capacity: 2000mAh-4000mAh (inclusive) Rated Voltage: twenty one Speaker Type: Outdoor speaker Additional Features: Drop-resistant, 360° surround sound, Hi-Fi sound effect Is There a Built-in Battery?: Removable battery Manufacture country: China Instructions included: No

bluetoothVersion: 4.0