Android Robot Style Rechargeable FM/MP3 Player w/ Stereo Speaker, USB AC Wall Power Plug for Recharge or Recharge & Play, Micro SD input, 3.5mm headphone plug for all MP3 players, ANDROID, PC, iPhone, iPad, iPod, Blackberry. (BLACK) Package Includes with USB Wall Charger power plug for recharge or recharge & play continuous none stop music. Build-in Smart IC chip can recognize a full battery and automatically switch to stand-by mode to protect the speaker battery from over charging. MP3 player with TF/Micro SD card slot. (Support max 4GB, NO CARD INCLUDED) Output: RMS 3W. Frequency response: 90Hz~20KHz 3. SNR: &gt;85dB. Impedance: 4 ohm. Power supply: 550MH Lithium battery. Charging power supply:USB 5V 40mm internal magnetic, high-quality aluminum and iron boron speaker. Built-in lithium rechargeable battery for up to 5 hours of continuous music. Built-in FM radio (range: 87.0~108.0MHz) RGB LED operating light with On/Off switch. 3.5 inch height Android robot style design with about 1.5" stereo speaker. In the Box: 1 x Google Android Robot Mini Speaker + USB Wall Charger Plug + 1 x Stand Holder 1 x USB cable & Audio Cable