Excellent used condition ✨ Includes original box, charger, monitor and standard size strap Standard Size: Fits 24.4" to 34.8" chest Exercise tracker and heart rate monitor with built-in memory and unrivaled versatility. Belt up, collect MEPs and go for your goals. The MZ-3 connects easily to your phone, favourite cardio machines and screens in the gym so you can workout your way. Go phone-free with built-in memory and make every workout count. Join millions of Myzone users and find your squad. Fun, fair fitness. WHAT IT DOES *Stores your data, so you can workout phone-free. *Shows live workout stats - view via the app, on your smartwatch or on the big screen in your club or gym. *Works with your Apple Watch or Android Wear. *Logs every workout online - collect MEPs (Myzone Effort Points) and make every workout count. *Connects with your favourite cardio machines. *Tracks your health with biometric data. *Buttons onto a comfortable, washable strap. *Sets monthly workout goals recommended by the World Health Organization. Climb the ranks and connect with the Myzone community. Connects via Bluetooth 4.0, ANT+ and Analog. 99.4% accuracy - equal to an EKG machine, used by health professionals. Stores up to 16 hours of exercise so you can workout phone-free. Water resistant. Battery life: up to 300 hours between charges (USB charging cable included). Hand-washable strap. Compatible iPhones - 5 and above. Compatible Android Devices - Android 6.0 and above.