I recently purchased the Yiluoguo Q12 speaker online. After trying it out, I found the product to be small and cute in appearance (11CM long, 6CM wide, 3CM thick, and weighing less than 100 grams). The manufacturing process is of good quality and has many functions. More. Advantages: 1. Use TF cards with different capacities to connect to the computer to create multi-layer file directories to store audio files in three formats: MP3, WAV, and WMA. Audio files can be searched for and designated for playback by directory. It also supports single-player playback like general music players. Playback modes such as song loop, sequence, random, etc.; 2. FM radio, the radio effect is excellent in first- and second-tier cities with many radio frequency stations; 3. Supports one-click long-term recording (depending on TF card capacity), if you consider recording 8G card can be used, and a 4G card is enough to just listen to music; 4. Alarm clock and scheduled FM radio can be set, date and time, automatic shutdown time, etc.; 5. Headphones are supported, and the audio cable can be used as an external device for PC, mobile phone, etc. For speakers; 6. Although the speakers are small, the sound quality is still good. The volume is adjustable in 15 levels. There is no hoarse sound at the maximum volume. At the maximum volume, it can be used as accompaniment for hip-hop and square dances; and can be set to natural, rock, pop, classical, Jazz, heavy bass and other playback sounds, the bass effect is obvious. Disadvantages: The lithium battery is built-in and non-replaceable and does not support backup batteries. The manual says the battery lasts for 8 hours, but I haven't tried it yet. AC power can only be charged when the device is turned off and cannot be supplied directly during use. The Taobao price for the 8G card is NT$158. It comes standard with a USB cable (can be used for PC connection or AC charging), charging USB plug, audio cable, and comes with a mesh bag and headphones for reference. Supplement: Supports LRC file lyrics synchronization, and displays three lines of lyrics on the screen. The disadvantage is that the 2.8cm diagonal screen text is a bit small, and elderly people with poor eyesight may not be able to see it clearly.