Bluetooth 4.2 with AAC codec
Impedance: 16 Ohm; Frequency response: 20Hz - 20,000Hz
Omnidirectional built-in microphone for calls and voice control
Up to 5 hours play time at moderate volume; Charging time: Approx. 2 hours
Parallel Import Two business days shipping Free Shipping to HK for purchase from $500 onwards Exchange of Defective Units purchased in 7 days 24 months Limited warranty services provided by: Cityone Care [H.K.] Ltd. Service Address: 1A, 1/F., Wah Shing Centre, No. 11 Shing Yip Street,Kwun Tong, Kowloon, Hong Kong Product to be eligible for 24 months warranty, you shall make registration with Citylink website within 30 days after purchase of the product