Product Specification: - 50 x 50 x 15.3mm glass fibre reinforced polyamide case - Copper stainless steel bezel - 70g weight - Gorilla glass - 24mm Grey Silicone Strap - Wrist Sizes: 130 - 230mm - 454 x 454 display resolution - Customisable watch face choose from Suunto designed & several options via Google Play™ - Wireless Firmware up-gradable - Compass features with several options from via Google Play™ - 24/7 activity tracking with Google Fit™ - Rechargeable Lithium-ion Battery - 50M water resistant - 2 years international warranty Connectivity: - Smartphone compatibility with most common models - Bluetooth Smart Connectivity between devices - Internet connectivity via Wi-Fi and through mobile phone's internet - Wireless watch software updates from cloud Battery Life: - up to 40 days in time mode (Battery Saver mode) - Up to 12 hours in training mode with GPS - Up to 2 days for smart watch use (Actual battery life may vary depending on settings, applications and other factors)