Welcome to our store! Experience superior sound with this outdoor camping Bluetooth speaker, featuring stereo surround sound, high volume, and powerful subwoofer bass for an immersive music experience. Compatible with a wide range of devices including mobile phones, computers, and tablets via easy wireless Bluetooth connection, supporting Windows, Android, and iOS operating systems. This portable speaker supports Bluetooth, U-disk, memory card, and microphone inputs, allowing you to enjoy your music in various ways. Perfect for dinners, picnics, lecture halls, walkman radio, K-song, and more, this speaker is versatile for any occasion. Enjoy reliable performance with a built-in 1800mAh rechargeable lithium-ion battery and a transmission distance of approximately 10m / 32.8ft, with a signal-to-noise ratio greater than 75dB. Item Type: Portable Dual Subwoofer Bluetooth Speaker Product Material: Plastic Color: Silver Gray Weight: Approx. 720g / 25.4oz Product Size: Approx. 26 x 13 x 10cm / 10.2 x 5.1 x 3.9in Battery: Built-in rechargeable lithium-ion battery, capacity 1800mAh, comes with built-in battery Voltage: 3.7V charging Input: DC 5V Bluetooth Version: 5.0 Bluetooth Frequency: 2.4GHz-2.48GHz Transmission Distance: Approx. 10m / 32.8ft Frequency Response Range: 50Hz-20kHz Signal-to-Noise Ratio for the Whole Machine: Greater than 75dB Package Includes: 1 x Speaker 1 x Data Cable If you encounter any product issues after receiving the goods, such as damage or incorrect quantity, please contact the seller immediately. We will do our best to provide you with satisfactory customer service.