Arm Sling Unifoam Sling & Swathe Clavicle Supports A 2 hour charge will produce Style:1 Pair (Left & Right) A 2 hour charge will produce up to 20 hours of listening time❗ This long lasting charge makes the BlackPearl™ unique and one of the best rechargeable hearing aids on the market The test is based on heart rate and heart rate variability at rest and personal information * Polar OwnCal© calorie expenditure with fat percentage * Polar OwnCal calculates the number of kilocalories expended during training 5 wide shoulder straps extend from sling criss cross over shoulders and attach with adjustable buckles and hook to front of sling * Detachable swathe wraps around one arm and chest closes with pressure sensitive hook * Fits left or right * Belt 47 Long Sling 12 Wide * Universal sling and swathe constructed of laminated foam to white plush fabric * 1