10X Black Open Battery Holder Case Box for 3.7V 18650 Battery & 1x Mp3 Lossless Decoder Board Comes

10X Black Open Battery Holder Case Box for 3.7V 18650 Battery & 1x Mp3 Lossless Decoder Board Comes Popis

set2: 1 x Mp3 lossless decode board + 10 x Battery Holder
Product name: Battery holder; Battery type: 3.7 V 18650 battery (not including batteries)
Body size: 7.9 x 2.1 x 2.2 cm (L x W x H)
support MP3 format, power automatically , the status of the red LED update.
support U disk (tested over 32G), TF card (tested 16G) playback mode; power default TF card mode, if the TF card does not exist automatically jump to U disk mode, and both devices are installed, you can manually Set the playback mode, please refer to the key

Material: Plastic, Metal/metal
Description: This Battery Box Holder for DIY; Spring Clip Design and Easy Internal Battery Can; Not included
operation instructions.
button to adjust the and down track , volume + -, pause / , mode ,
Note:
"long press" about 2S
If you use U disk mode, the proposed 5V power supply, some U disk does not support 3.7V power supply.
Product specifications
Power supply range: 3.7 ~ 5.5V
Product Size: 45mm x 36mm
Exquisite double board design, large area copper, stable and reliable.
Anti-static bag refined packaging, to avoid damage to the way of delivery static electricity.
colour: / Black

Package Contents:
1 x Mp3 lossless decode board
10 x Battery Holder