[HiFi Stereo Speaker] Inateck Wireless Bluetooth Speaker Outdoor Portable HiFi Speaker Mini Stereo Speaker Rechargeable for iPhone 6 5S 4S/ iPad / Android Smartphones / Samsung Galaxy S4 S3 / Laptops / Mobiles / Mp3 player devices, Up to 10 Hours of Play Time Two 1.5'' full-range units plus bass radiator, top grade CSR8645 chipset, operating under Bluetooth standard, supports CSR's music decoding profile APT-X Realistic middle and high frequency discriminative playback, strong bass conveying, tone signal range of 30 metres Built-in 1500mAh lithium polymer battery, power lasts up to 20h while connected to audio cable, up to 10h while in Bluetooth operation mode Built-in microphone, hand free telephone calls possible, stops playback when receiving incoming call, resumes playback after hanging up Compact and screw-less design, precise and seamless construction, strong bass emission, leading to good sound quality on HiFi levels