Waterproof Pulse Wireless polar heart rate monitor watch Digital cardio sensor Fitness sport Running hrm Heart Rate Chest Strap Features: Wireless receiving heartbeat signal transmitted from heartbeat brooch,chest band frequency is AM5.3KHz; Time display: hours, minute, second; Alarm clock function; Give alarm shen heart rate exceeds the upper and lower limit values (60-220); Timing (maximum time-keeping is 23 hours, 59 minutes, 59 seconds, 99); 12/24 hour display format; EL backlight; Keystoke tone Waterproof: 50m Waterproof (please not press watch button under water.) Package Inlcuded: 1 x Watch(Battery included) 1 x Chest Strap(Battery included) 1 x English Instruction Note: 1. Please allow 1-3 mm error due to manual measurement and 1-3g weight error make sure you don't mind before ordering. 2. Due to the lighting of the photos and the difference of monitors, the pictures may not reflect the actual color of the real item. Please make sure you don't mind before ordering, thank you! About Shipping: 1.please pay attention to your delivery address such as: name, street, house number, doorbell/email without name, etc. is correct, or the order will not be delivered correctly. 2.All items will be shipped within 3 business days after the payment is received. Most times you will receive them within 8-12 days then. The specific delivery time is depend on circumstances. 3.During the shopping process, if you have any questions, please feel free to consult us, we will reply you within 24 hours Hope you have a pleasant shopping experience!