Check the listing for details. Gardner Tackle ATTa Audio Bite Alarm. Condition: New. Listed at 122.11 USD. The alarm is water protected(IP67) and powered from a single 476A 6 volt battery. The ATTa is always on and ready for action, apart from when it is placed in its designated hard case (supplied). Bite detection is achieved by the magnet roller wheel being turned by line movement. The ATTa wheel detection system is “intelligent”, it understands where the wheel is and what the last activation was. This intelligent technology means the ATTa will not suffer from false activations. You can pay with Paypal or . Small items are sent with Royal Mail and larger parcels with my Courier. Courier postage costs are mainland UK only (Exc Highlands & Islands), for all other areas please email or phone me for a quote before committing to buy. If you do want any other information please get in touch. Thanks.