The DSP Outdoor Portable Noise Cancelling Super Bass Wireless TF Card Bluetooth Speaker is designed for outdoor use and compatibility with iPhone, Xiaomi, and Huawei devices. Key features include a built-in bass and HiFi decoding chip for enhanced bass performance, a noise-cancelling microphone for clear voice calls, 360-degree surround sound, and a 1500mAh lithium battery for fast charging and up to 5 hours of playtime. It supports Bluetooth 4.2 technology for stable connections and can play music from Micro SD cards or U Disks. The speaker offers high-fidelity sound quality, with a frequency response of 100-20000Hz and an output power of 3W*2. Available in black, blue, and red, it includes a portable Bluetooth speaker, manual, USB cable, and audio cable.