Fitbit Alta HR Fitness Tracker with Heart Rate, 7 Day Battery Life, Compatible with Smartphones, Tablets, Computers

Generate a 100-character excerpt from the product description below. Return ONLY the excerpt text, without any prefixes, notes, or explanations. Example: “Compact wireless speaker with 12-hour battery life and waterproof design.” Product description:
Is Discontinued By Manufacturer ‏ : ‎ No
Product Dimensions ‏ : ‎ 1.61 x 0.61 x 1.3 inches; 0.8 ounces
Item model number ‏ : ‎ FB408SBL
Department ‏ : ‎ unisex-adult
Batteries ‏ : ‎ 1 CR2 batteries required. (included)
Date First Available ‏ : ‎ February 18, 2017
Manufacturer ‏ : ‎ Fitbit Inc
ASIN ‏ : ‎ B06W58QKH6