Features: MicroSD/TF USB Charging Super Long Standby MIC/BXS MIC/AUS

Tech Specifications: Charge time: 2-3 hours Playtime: 5-6 hours BT

Version: 5.1 Battery: 3.7V 400 mAh

Lithium Power Supply: DC 5V 800-1200 mAh

Range: 10 meters

Transmitting Frequency: 50Hz - 18kHz

Includes: Retro Wireless Speaker USB Charging Cable 3.5mm Audio Cable User Manual