Features: With?this?device，?you?no?longer?have?to?have?headphone?wires?in?the?way?of?listening?to?music?from?your?portable?devices?at?home?or?outdoor.?Simply?turn?on?your?Bluetooth?and?pair?the?devices，?and?in?no?time?at?all?you?have?a?portable?speaker?that?sounds?great. Dual?speakers?deliver?full-range?stereo?sound，?with?DSP?noise-reduction?technology Professional?acoustic?system?with?premium?sound?quality Supports?speak?phone，?built-in?microphone，?to?bring?clear?calls?for?you. Long?battery?life. Simple?and?easy?to?operate?key?design Specifications: Size:?approx.?16.8?x?6?x?4.5cm Color:?black，?red，?blue，?gray The?main?technical?parameters: Bluetooth?standard:?3.0+?EDR Transmission?distance:?10m Output?power?rating:?2*1.5w Play?time:?4-10?hours S/N:?75dB Distortion:?≥0.5% Charging?time:?3-5hours Package?includes: 1?x?Mini?speaker 1?x?USB?Cable 1?x?3.5?mm?audio?cable ?