Penn Championship High Altitude Head Tennis Balls – 2 Pack 6 Balls Yellow - USTA & ITF Approved - Official Ball of The United States Tennis Association Leagues - Natural Rubber for consistent Play auspowers_batchtwo Technical Specifications: ACC mode Input:

Technical Specifications: ACC mode Input: 13V-36V | Output: 5V/2

100% SATISFACTION WITH 60 DAYS WARRANTY: contact GATHERFUN directly for replacement or refund if your order has any problem

Delay output time: 0

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Penn Championship High Altitude Head Tennis Balls – 2 Pack 6 Balls Yellow - USTA & ITF Approved - Official Ball of The United States Tennis Association Leagues - Natural Rubber for consistent Play auspowers_batchtwo Technical Specifications: ACC mode Input:Penn Championship High Altitude Head Tennis Balls 2 Pack 6 Balls Yellow USTA & ITF Approved Official Ball of The United States Tennis Association Leagues Natural Rubber for consistent Play Penn Championship High Altitude Tennis Balls 2 Pack (Total of 6 Balls) USTA and ITF Approved Product Features HIGH ALTITUDE Tennis balls manufactured for surfaces over 3,000 feet or 914 meters in elevation. Deep elastic seams for reduced cracking. EXTRA DUTY