Shenzhen Sunding Dragon Electronics Co.,LTD was founded in 1998,Which is an innovative technology company focused on the bicycle computers and bicycle accessories for riding.The design and development experience for 20 years,Have six patents and Rohs/CE/FCC/SGS certifications,Our annual sales revenue exceeds USD50 millions.SunDing is already a well-known brand at domestic and overseas,Exclusive professional R&D,Open the private molds,Support OEM&ODM orders,Our products are sold to distributers and retailers domestically and globally,We have developed and designed more than 40 cycling series products and are constantly upgrading,multi-functional,multi-language,10-29 basic functions,simple parameter settings,auxiliary mode for convenience and safety,Compatible with bicycle,electric bicycle,motorcycle,electric wheelchair and so on for Indoor and outdoor fitness exercises,Such as Bluetooth Cycling Computer with bluetooth heart rate monitor(JOY-583BT 9 languages bluetooth cadence wired remote control), Wireless Cycling Computer with wireless heart rate monitor(SD-577C 9 languages,SD-573C,wireless cadence wired remote control), Wireless Bike Computer(SD-577C1 9 languages,SD-579C,SD-573C1,SD-570C 3 languages,SD-548C,wireless speed sensor),Wired Cycling Computer(SD-577A 9 languages,SD-579A,SD-573A,SD-570A 3 languages,SD-576A,SD-568AE,SD-581A,wired speed sensor),Bluetooth Heart Rate Monitor(SD-520),Wireless Heart Rate Monitor(SD-521),Bluetooth Cadence Sensor(SD-518),Bicycle Horn and Alarm(SD-605,SD-603),Multi-functional Bicycle Computer Bracket(SD-689),etc,Thousands of riders have good experiences with our products and services, Our products have sold well in China,EU,US,Canadal,Mexico,Latin American,Australia,Japan,South Korea,South Asia,Middle East,and other oversea market etc. Welcome to visit our company at all time.SUNDING culture is loving cycling, holds weekly riding activities 1-2 times, During riding our team not only try to test our bicycle, but also get the actual data to our engineers immediately to research and analysis, so that we know the advantages and disadvantages of our products, keep our product qualities are constantly perfect, Although we hope cycling is not our career, but we love and persist cycling, Cycling has become an integral part of our life Service Warranty1.Quality problems,free replacement within three months,and one year warranty.after-sales service.2.Supply online service 24 hours a day on Ali-TradeManager or message,Contact us by Skype,Wechat and so on.3.Also contact us by email,and we will reply in 24 hours,or by phone if urgentlyPurchasing Guide1.After confirming the order details, we will make the proforma invoice for you2.After receiving payment,Finish checking the items,ship out by DHL,UPS,etc in 10 days3.Support OEM&ODM orders,customizing the products logo,instruction,package and opening the private mold,50% deposit, 50%balance before delivery.4.For bulk order,50% deposit,50% balance before delivery,Delivery shenzhen FOB,ship out by 45 days5.Support drop-shipping, If you are selling on Amazon, we also can support to ship to your Amazon FBA warehouse.Please rest asured the after sales.