ON THE LIFT OF THE HANDSET OF THE TELEPHONE THIS RECORDER STARTS AUTOMATICALLY AND SECRETLY RECORDING BOTH PARTY CONVERSATION AND STOPS WHEN THE HANDSET OF THE TELEPHONE KEPT BACK. THIS ALSO HAS MANUAL RECORDING. RECORDING DURATION IS 3 HOURS ON REGULAR CASSETTE, WORKS ON ELECTRIC/BATTERIES AND IS SOLD WITH WARRANTY; IF YOU WISH, Y OU CAN ALSO LISTEN TO THE CONVERSATION WHILE IT IS BEING RECORDED SECRETLY. CALL SURESH BATRA A.J.ELECTRONICS MUMBAI TEL. 26187583 W.H. 10-1 AND 3-7 PM.