Cole-Parmer Essentials Digital Key-Chain Wristband Counter
Digital counter which eliminates gear and miscount problems associated with mechanical counters. Tally button clicks when pushed confirming your count. Features two year constant use battery and shock-resistant ABS plastic case with a water-resistant O-ring. Counter is 1-7/8" dia x 1/2" thick and weighs is less than one ounce.
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