Features:
Compatible with smartphone, computer, tablets, various laptops above wirless communication v2.1; Compatible with Windows/Android/iOS operation systems
Wireless connection, since this speaker is bluetooth-enabled, it supports wireless connection and saves you from tangled wires.
Support TF card maximumly up to 32G(TF not included)
360-degree surrounding stereo sound performance, integrated with super bass and high pitch
Built in large battery of 600mAh, recharged by USB power; With reset hole and charging indicator
Built in noise reduction handsfree microphone for clear and smooth communication

Specificaion:
Material: Aluminum Alloy
Product Size: 83x80x34mm/3.27x3.15x1.34inch
Color: Black, Golden, Rose Golden, Silver(Optional)
Wireless Communication Version: 4.1
Effective Distance: 10M
Power-off memory: support (Memorize the volume and song)
Audio Format: MP3
TF Card: support 32GB(not included)
Work Voltage: DC 3.7V-4.2V
Speaker: Φ40
Power: 4Ω 3W
Response Frequency: 20Hz-20KHz
Play Time: about 8h
Standby Time: 72h
Charging Time: about 2h
Limited Charging Voltage: DC 5V
Charging Current: DC 500MA

Note:
1. The product can be reused
2. Please allow 1-3cm (0.4-1.18") difference due to manual measurement and slight color variation for different display setting.