This Vintage Casio ML-831 8 digit Electronic Calculator is designed to provide a high degree of versatility and performance as well as years of reliable service.  This product  allows you to play 11 musical notes, it also has 4 basic calculations, constants for addition/ subtraction/ multiplication/ and division, squares & powers, reciprocals, automatic accumulation in four calculations, direct access to the memory, percentage calculations including add- on/ discounts and mark-ups, square roots and various kinds of practical calculations.  This Casio calculator operates on 2 alkaline-manganese batteries (type: LR 1130) (not included).   Two silver oxide batteries (type: SR 1130, UCC389,  10L122 or RW-49) (not included).  This calculator gives approximately 300 hours of continuous operation on type LR1130 in the "CAL" mode (1500 hours on type SR1130).It gives approximately 100 hours of continuous operation on type LR 1130 when operating once a minute in the "musical note" mode (600 hours on type SR 1130).  This unit measures 1/4" H  x 2 5/8" W x  4 1/2" D.  It weighs 2.2 oz including batteries.  THIS IS A REAL CLASSIC COLLECTOR'S ITEM!!! BRAND NEW IN ITS ORIGINAL BOX NEVER OPENED..

How to order:
Shipping & Handling  charge on this item is $5.00 per unit.  Texas residents please add 8.25% Texas Sales Tax.  Send a money order or cashier's check to:

Jack Berg Sales Company
P.O. Box 96
El  Paso, Texas     79941-0096
                     or
We can ship UPS COD immediately for an additional $7.00 surcharge.  We do accept personal checks, but there is a 7 day delay in shipping to allow for clearance.  If you have any questions or to place a telephone order please call (915) 532-4519
9:00 - 5:00  MST    M-F