Naztech N15 3.5mm Mini Boom Speaker with SD Card Slot for WMA/MP3 Playback/Apple iPad/iPhone/iPod/Smartphone/Laptops (11558) Micro SD Reader / Player, Built-in Li-Ion Battery High Quality Amplified Sound, Connect to any 3.5mm Audio Device Music Formats: WMA / MP3, Speaker Output: 2 W Earphone Jack: 3.5mm, Battery Charge Time: 4 hours Frequency Response: 80 Hz - 18kHz Micro SD Reader / Player, Built-in Li-Ion Battery High Quality Amplified Sound, Connect to any 3.5mm Audio Device Music Formats: WMA / MP3, Speaker Output: 2 W Earphone Jack: 3.5mm, Battery Charge Time: 4 hours Frequency Response: 80 Hz - 18kHz Compatible with: Apple iPad/ iPad 2 / iPhone / iPhone 3G / iPhone 3Gs / iPhone 4 / iPhone 4 CDMA / BlackBerry By RIM / Casio / HP/ HP Palm / HTC / Huawei / Kyocera / LG / Huawei / Nokia / Motorola / Samsung / Pantech / Sharp / Sony Ericsson