This Retro Bluetooth Speaker is a versatile and portable device that offers a range of supporting functions for audio input, including Bluetooth, USB flash drive, TF card, AUX audio output, and FM radio. Its Bluetooth version 5.0 ensures a stable and reliable connection, and its built-in battery provides a working time of up to 4 hours (varies by volume).

The speaker has a cube shape and measures 4.3 x 2.8 x 2 inches in size. It comes in a blue color and weighs 6.7oz, with an 8oz option available as well. The device has a receiving range of up to 32.8ft and a frequency range of 50HZ-20KHZ. Its power output is 3W, and it can be charged through a USB port. This Retro Bluetooth Speaker is a perfect choice for those who enjoy vintage style gadgets with modern connectivity options.