The HP 49G+ is virtually identical in operation to the HP 50G. Dual entry ( Algebraic or RPN), CAS, a vast number of functions. This calculator is in excellent condition and fully functional. It uses 3 AAA batteries. It comes with a soft case which although worn is essential to keep the calculator in pristine condition. Here is a link to the user manual: https://h10032.www1.hp.com/ctg/Manual/bpia5324.pdf Royal Mail tracked postage to UK addresses only.
eBay