Product introduction:
The 3.5-inch large display design leaves an excellent user experience for buyers；The easy-to-use / Single Button to Switch design is well recognized by buyers；The ultra-thin body design is very portable.
Exquisite appearance / reliable performance / complete functions, can meet the needs of different groups of people, and is very suitable as a gift.
S10/S11：EBTN color display.
S11 built-in 800mA lithium battery (supports rechargeable use)
