The lithium battery is built-in non-replaceable and does not support backup batteries. The manual talks about the battery being usable for 8 hours, I haven't tried it yet. AC power can only be charged in the off state, can not be used in the direct supply. Taobao price with 8G card is 158 yang, standard with USB cable (can be used for PC connection can also be used for AC charging), charging USB plug, audio cable, send net bag, headphones, for reference. Supplementary: support for LRC file lyrics synchronization, in the screen display three lines of lyrics, the disadvantage is that the diagonal 2.8cm screen word is a little small, poor eyesight of the elderly may not be able to see.
Advantages:
1, the use of different capacities of the TF card connected to the computer can create a multi-layer file directory to store MP3, WAV, WMA three formats of audio files, audio files can be found according to the directory to specify the playback, but also with the general music player to support a single song to follow the same order, random playback;
2, FM radio, in the radio stations Frequency more in the first and second-tier cities radio effect is very good;
3, support for a long time (depending on the capacity of the TF card) recording, such as the consideration of recording available 8G card, only listen to the music with a 4G card will be enough;
4, you can set the alarm clock and timer FM radio, the date and time, the automatic shutdown time and so on;
5, support for headphones, with an audio cable can be used as a PC, cell phones and other external speakers;
5, support for headphones, audio cable can be used as a PC, cell phones
6, although the speaker is small, but the sound quality is still good, the volume of 15 adjustable, the maximum volume without mute sound, the maximum volume can be used as a street dance, square dance accompaniment; and can be set to natural, rock, pop, classical, jazz, bass, etc. to play the tone, bass effect is obvious.