This wireless digital fishing alarm set is a great helper for anglers. Features: Features of bite alarm: LED alarming signals with high output speaker. High visibility LED latching about 40 second memory. Adjustable sensitivity, volume, tone button. 256 variable code to prevent interference from another angler. Extra jack for illuminated swinger. Special rubber finished surface. Features of receiver: Design with antenna. Operating range more than 100m. Screen to indicate number of bite alarm. On / off, sound, vibration button. Output speaker. Automatically paired. Features of swinger: 4 LED illuminated swinger with different light colors. Stainless steel material. When the fish comes to your hook, it will give you signal. Technical Parameter: Bite alarm: Work volt: 9V Work current: 30mA Standby current: 0.15mA Off current: 6uA Work frequency: 433.92MHZ Modulate mode: ASK Transmission range: 100m plus Work temperature: -30 ~ 70 Receiver: Work volt: 3-5V Work current: 30mA Standby current: 2.5mA Off current: 3uA Work frequency: 433.92MHZ Modulate mode: ASK Receive sensitivity: -110dbm Work temperature: -30 ~ 70 Swinger: Light color: Red, Yellow, Blue, Green Material: ABS & Stainless steel Specifications: Bite alarm size: 9 * 5 * 4.5cm / 3.5 * 2.0 * 1.8in Receiver size: 17.5 * 6.2 * 3.9cm / 6.9 * 2.4 * 1.5in Swinger length: 23cm / 9.1in Zippered case size: 29 * 27 * 6.5cm / 11.4 * 10.6 * 2.6in Total weight: 1009g / 2.22lb Package List: 4 * Bite Alarm 1 * Receiver 4 * Swinger 4 * Weight 1 * Zippered Case 1 * User Manual (English)