Wireless remote sense bite alarm kit will send alarm sound after fish bites, you can receive the signal even over 100 meters away, so you can walk away or have a rest carrying the receiver, not afraid to miss hooked fish. Moreover, built-in 256 variable code are enough to prevent interference from another angler, just enjoy your fishing with this equipment~ Features: -Transmitter Adjustable sensitivity, volume, tone and LED color. Press V for 5 seconds for On/Off. 7 changeable LED color bite alarm. Press button S for 5 seconds to change LED light color. 256 variable code enough to prevent interference from another angler. LED alarming signals with high output speaker. High visibility LED latching about 30 seconds. Built-in jack for your illuminated swinger of 2.5mm plug. Powered by a 9v battery(not included). -Receiver Over 100m transmission range. 3/4/6 different color LED light to match 3/4/6 different alarms. On/off, adjustable volume, vibration button. Vibration, LED alarming signals with high output speaker. Memory LED. Removable antenna. Powered by a 9v battery(not included). Portable zipper padded case stores all contents,convenient to carry around. Specifications: Model: JY-39 (4 * Fishing Bite Alarms & 1 * Receiver) / JY-39-33 * Fishing Bite Alarms & 1 * Receiver / JY-39-66 * Fishing Bite Alarms & 1 * Receiver(optional) Material: ABS & Copper Bite alarm size: 9.5 * 4cm / 3.7 * 1.5in Receiver size: 7.5 * 4cm / 2.9 * 1.5in Zippered case size: 33 * 22 * 6cm / 12.9 * 8.6 * 2.3in Package weight: Approx.609.7-763.5g / 1.3-1.7lb JY-39 Package List: 4 * Fishing Bite Alarms 1 * Receiver 1 * User Manual(English) 1 * Case JY-39-6 Package List: 6 * Fishing Bite Alarms 1 * Receiver 1 * User Manual(English) 1 * Case JY-39-3 Package List: 3 * Fishing Bite Alarms 1 * Receiver 1 * User Manual(English) 1 * Case