[. . . ] [. . . ] No adapter is necessary; use SP-i177 with any notebook, cell phone, iPad, iPod, iPhone, MP3/MP4 player or CD player that has a standard 3. 5mm audio input. SP-i177 also has a convenient volume knob so you can adjust the volume as you wish. For more information, contact your local sales representative. Available: Jan. 15, 2011 Great companion for iPad, laptop, or tablet PC For iPod, MP3/MP4 player For iPhone or cellphone Fast Link to another portable speakers for louder music Features: Portable speaker for cell phone, laptop, MP3/MP4 player, iPad, iPod, or iPhone Class-D digital amplifier 40mm big driver for clear sound and deeper bass Power on/off with volume control Link-design for connecting to other portable speakers Built-in lithium battery; quick charge by USB Up to eight hours working time Color option: Sky Blue or Bright Yellow Pouch included Product Data sheet: Model Name Picture SP-i150 SP-i170 SP-i177 Color option Specification RMS (Watts) Driver unit Frequency Response (Hz) Signal-to-noise ratio Volume Link Power On LED Indictor Charging WEEE Data Black/White Black/ White/ Pink/Blue Blue/Yellow 2 1. 25”, 4 ohm 150 Hz~20K 80 dB Blue Red 2 1. 5”. [. . . ] [. . . ]