TG-157 Bluetooth Speaker Portable Wireless Subwoofer Loudspeaker TF Card with Super Bass Splash proof for All Smartphones Dual-mode power supply: buiRM-in lithium battery, can be used via USB interface, power supply, or use DC5V USB power supply, dual power supply mode free choice., ? Using the latest Bluetooth 4.0 technology, support for a variety of tablet PCs and smart mobile phones and other Bluetooth devices, ►Comes With Led Lights: Flash Light Subwoofers Handsfree Mini Call Profile Stereo Support., Using the latest Bluetooth 4.0 technology, support for a variety of tablet PCs and smart mobile phones and other Bluetooth devices, ► Super bass splash proof wireless Bluetooth speaker Bass tracking compensation technology: suspended bass membrane + full-frequency loudspeaker low-frequency loudness + 50%, intelligent low-frequency tracking compensation technology, automatic compensation of bass sound stability and distortion, thick and powerful bass, more beautiful sound. Waterproof design: Wireless Bluetooth speaker has IPX5 waterproof grade, allowing you to enjoy music indoors and outdoors easily. The so-called IPX5 waterproofing grade refers to spraying water from various directions to the product, which will not affect the production of product functions. Colorful, elegant temperament: Suitable for various scenes in life, but also more waterproof, wear-resistant, corrosion-resistant characteristics. HD hands-free calling: Built-in high-definition noise-canceling microphone with Hands-free Profile technology for two-way voice calls USB Sound Card: USB2.0 Transmission USB sound card function, when connected to a computer, directly use the USB card reading function when the computer audio is used, which can realize the storage management of the memory card when connecting to the compute.