1, the communication is stable, easy to break, compatible with USB1.0 and 2.0 communications. 2, all of the circuit boards used in all SMT chip technology to ensure reliable quality, reduce Ruipian hand soldering damage. 3, using 5.5MM straight through cable, shielded, with ground, with out interference. 4, new packaging, new driver to support XP, VISTA, WIN7 system, driving a key installation. 5, full manual standardized test testing to ensure that each product inspection at the factory Delivery time Country Delivery Time Working Days (not including holiday) 15-19 20-32 33-48 >50 Working Days + Saturday + Sunday 21-25 26-45 45-60 >59 Asia country Rate (item arrived ) 90% 10% 0% Refund Ireland Rate (item arrived ) 40% 60% 0% Refund United Kingdom Rate (item arrived ) 40% 60% 0% Refund Greece Rate (item arrived ) 40% 60% 0% Refund Turkey Rate (item arrived ) 35% 60% 5% Refund France Rate (item arrived ) 15% 80% 5% Refund Germany Rate (item arrived ) 20% 70% 10% Refund Russian Rate (item arrived) 10% 50% 40% Refund Spain Rate (item arrived) 5% 45% 50% Refund Argentina Rate (item arrived) 5% 35% 60% Refund Italy Rate (item arrived) 5% 15% 80% Refund Brazil Rate (item arrived) 5% 15% 80% Refund PS. ALL of ship via International registration packet . It have tracking NO. you will receive it after 15-23 days.If you cann't receive in time,please contact me freely. Thanks for your support and understanding.