Features of receiver: Design with antenna. Screen to indicate number of bite alarm. On / off, sound, button.Features of : 4 illuminated with different light colors. 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 : 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? 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 length: 23cm / 9.1in Zippered size: 29 27 6.5cm / 11.4 10.6 2.6in Total weight: 1009g / 2.22lb Package List: 4 Bite Alarm 1 Receiver 4 4 Weight 1 Zippered 1 User Manual (English) Y0934. This item is in the category "Sporting Goods\Fishing\Anglers' Equipment\Bite Alarms". The seller is "vantini" and is located in this country: CN. This item can be shipped to all countries in Europe, all countries in continental Asia.