Specification: Brand Garmin Model Forerunner 935 Lens Materialglass Bezel Materialfiber-reinforced polymer Case materialfiber-reinforced polymer Quick Fit watch bandsyes (22 mm) Strap materialsilicone Physical size 47 x 47 x 13.9 mm Weight 49g Water rating 5 ATMBattery typerechargeable lithium-ion Display typesunlight-visible, transflective memory-in-pixel (MIP) Display size 1.2 (30.4 mm) diameter Color display Battery life Smart Mode: Up to 2 weeks GPS/HR mode: Up to 24 hours Ultra Trac mode: Up to 60 hours without wrist heart rate Memory/history 64 MBFunction: Premium GPS running/triathlon watch with wrist-based heart rate. Offers advanced running & multisport Features in a comfortable watch you can wear all day, & it only weighs 49 grams. Provides elevation changes with a built-in barometer; altimeter & electronic compass help you keep your bearings. Evaluates your training status to indicate if youre undertraining or overdoing it & offers additional performance monitoring Features. Provides advanced dynamics for running, cycling & swimming, including ground contact time balance, stride length & more. More details, please refere the English Manual Link:http://img.banggood.com/file/products/20170611230312 Forerunner 935_SG_0A.pdf Package Included:1x Forerunner 935 GPS watch 1x Charging Cable 1x Manual