The Jawbone UP24 features Bluetooth syncing, so you get instant feedback on your sleep and fitness activities. Limit 5 per household. Connect to your favorite devices and apps. Check device compatibility here. PRODUCT FEATURES: Bluetooth Smart automatically syncs data to your phone or computer. UP24 system measures steps taken, distance traveled and calories burned. Device monitors your sleep and provides insights. Smart Alarm and Power Nap features wake you at the ideal moment in your sleep cycle. Rechargeable battery lasts up to 7 days on a full charge. Sleek wristband makes a fantastic fashion accessory. Splash-resistant, hypoallergenic band ensures long-lasting use. Free UP app lets you log diet and nutrition information. WHAT'S INCLUDED: UP24 band 2.5mm-to-USB charging cable Quick Start guide PRODUCT CARE: Manufacturer's 1-year limited warranty PRODUCT DETAILS: Small band: fits wrists from 5.5 to 6 in circumference Medium band: fits wrists from 6 to 7 in circumference Large band: fits wrists from 7 to 8 in circumference Model numbers: Small: JL01-02S-US Medium: JL01-02M-US Large: JL01-02L-US Promotional offers available online at Kohls.com may vary from those offered in Kohl's stores. Bluetooth Compatibility Chart Version: Compatible With: Bluetooth Smart Ready* Bluetooth Smart Ready Bluetooth Bluetooth Smart Bluetooth* Bluetooth Smart Ready Bluetooth NA Bluetooth Smart Bluetooth Smart Ready NA NA *This Bluetooth version is backwards compatible. Size: SMALL. Color: Red. Gender: Unisex. Age Group: Adult.