Mini Portable Travel 3.5mm Loud Speaker Builtin Battery for Mobile Phone MP3 PC White

Description： With hang hole design, this speaker built-in battery is so small and lightweight that you can take it anywhere anytime. Equipped with a 3.5mm o cable at the bottom, you can listen to music after connection with mobile phone, MP3, MP4, computer and other devices with a 3.5mm o jack. Features： 1. Small and lightweight, hang hole design, easy to carry 2. Low voltage, low power consumption, power amplifier IC, pure sound quality, low distortion. 3. Suitable for MP3, MP4, MP5, mobile phones, computers and other devices with a 3.5mm o jack. 4. Comes with an o cable at the bottom of the speaker. Equipped with a USB charging cable. 5. Built-in 180mah battery, no external power supply needed, provides one and half hours of playing time at maximum volume, or about 3 hours at 50percent volume. 6. Unique design -- Retractable speaker. Specifications： Material： ABS Size： Approx. 52 x 52 x 38mm 2.0 x 2.0 x 1.5in Impedance： 4 ( Ohm ) Distortion： 0.5 (percent ) Frequency response range： 200-20K (Hz) Sensitivity SNR： more than 89db (dB) Speaker Unit size： 3.5 (mm) Carrying power： 2.2 Battery capacity： 180mah Charging Cable Length： 50cm19.7in Self-contained： 3.5mm0.14in o Cable Length： Approx. 9cm3.5 in Package weight： 78g Package List： 1 x Speaker 1 x USB Charging Cable .