Jobst UltraSheer 15 20 Knee CT Black XL Diamond Pattern Lift Chairs Accessories EasyPulse POC External Lithium ion Battery Style:Right Ear EasyPulse POC External Lithium ion Battery Superior sound quality * Extended battery life * Enhanced probe sensitivity * One year full warranty * The large informative display shows battery life signal quality and extended 50 to 220 bpm heart rate * The 5 MHz vascular probe is designed to ease location of deeper vessels * The medium width beam and pencil style shape provides optimum sensitivity and ease of use * * Provides relief from tired aching legs * Reduces mild swelling * Helps improve circulation * Provides continuous relief from tired aching legs and mild swelling * Use gradient technology to help improve circulation and revitalize your legs especially when sitting or standing for long periods of time * Latex free * Elegant diamond design perfect for stylish occasions * Unparalleled sheerness without sacrificing durability * JOBST© Advanced Comfort© gives stocking a light and cool feel for year round wear * Jobst makes your legs look as good as they feel