This black-toned SD card speaker can play music through connecting with an SD card or a USB drive. The polished appearance comes with a unique design on the sides for a heavy-duty look. This SD card speaker is a delightful gift for music lovers.

• Hi-Fi dimensional sound.
• With a carrying strap.
• Weight: 0.4kg.
• Use with secure digital cards, USB mass storage devices, mobile phones, computers, MP3 and MP4.
• With standard 3.7V battery.
• Easy to use.
• Charging voltage: DC 5V ± 0.5V.
• Frequency response: 300-20,000Hz.
• Output power: 2W+2W.
• Working current: 300mA.
• Speaker impedance: 4Ω x 4.