• Driver unit: 40mm diameter • Support Wireless 4.2 version downwards • Compatible with 4.2 VERSION • Scope of work: 10meters • USB charging cable: AC input 110-240V DC input 5V • Talk time: 6 hours • Stanby time: up to 15 hours • Operating frequency: 2.4GHz-2.4835GHz • The output frequency: class2 • Noise reduction the chnology: DPS digital signal processor • Support A2DP function • AVRCP remote control capabilities • Supports automatic switchover to incoming call function • With the end number redial function • Large and small volume adstment • Forward backward selections feature pause function • Compatible with ROHS standards