The heart rate monitor offers a simple yet precise way to measure pulse before during and after exercise to help you determine the appropriate level of exercise for your specific needs and workout goals - Color: Black + Silver - ABS case material - 1.3" LCD display - HR precision:+/-2 - Display :4 digital LCD - Features: clock / alarm / heart rate monitor - Clock: 12 hours system and 24 hours system - Uses 2 x AG13 batteries (included) - Comes with neck loop & English manual - Neck Cord length: 50cm( approx) http://m5.img.dxcdn.com/CDDriver/CD/sku.114057.doc