Bluetooth MP4 Player With Slot for Memory Card Supportu To12

Bluetooth Mp4 player Storage capacity: Supports up to 128G card Maximum output power: 18mW*2 Battery Type: Built-in lithium battery (built-in) Screen size: 1.8-inch color screen Playing time (hours) : about 7 hours Standby time (hours) : more than 24 hours Audio format support: wav/mp3