When an alarm is locked, it is sensitive to vibrations. Protect your bicycle from crafty thefts. Utilize vibration sensor for detection. Instantly produce super loud alert sound to scare the thief away when certain vibration is detected. Attached with a remote control for added convenience. Convenient clip mount, easily install to the bicycle handlebar. Solid casing is durable for long-lasting use. Available for use when the distance between remote control and alarm is within 10-50m(Open distance),can pass through the wall. This multi-functional tail light is integrated, three in one (alarm + tail light + Bell): this is a good combination, bright tail light + smart remote alarm + electric Bell to protect your bike from theft. All operations are completed by remote control. Such as cicada-like shape is very beautiful, under the buttocks, invisible bracket. Wireless doorbell function: driving doorbell / COB light source, 120 DB ringtone is clear and bright, COB light source, front and rear, designed to protect you and other reminders at the same time. In addition to any exercise bike, there will be a long warning, if you continue to use the bike, it will emit a bad alarm sound to scare away the thief. Standby time: USB charging/battery energy-saving and durable and durable 2 3 hours of charging, 30 days standby, 15 20 days of normal work. A6 provides long-term protection for your safety. A key search / smart alarm clock: wireless remote control is stable and accurate, your car, car-level anti-theft system, complete one-key control, providing a full range of protection Specification: Model:A6 Battery capacity: USB rechargeable Lithium battery(Notice: Battery capacity shipped randomly, please in kind prevail.) Charging 2-3hours, using up to 15days, up to 60days standby arming. Light beads: COB bright light source The A(red key) is for Flash Model Switch. The B (blue key) is the Calibration code key for reset the light to be functional again when it is needed. Remote control battery:12V/27A Alkaline battery Alarm sound:105-120db Remote control distance:10-50m(Open distance),can pass through the wall. Applicable models:Normal installation is for bicycle saddle bracket with distance 5-7cm(Any bike models and sizes) Material:Plastic Size:8.8cm x 4.5cm x 2cm/3.43 x 1.76 x 0.78(approx) Color:Black Quantity: 1 set Warning: 1.Do not place the alarm on the next ear to avoid hearing damage pressing the button or an alarm ,interval of at least 2 meters away from the ears. 2.This device is strictly prohibited children play. 3.Do not use this device in a fire. 4.Note that when put the host into the water for a test please close charging port Silicone Cover. Note: No retail package. Please allow 1-3mm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you Features: 1. Made of high-quality plastic material with the features of strong, durable and lightweight. 2. Wireless remote control taillights are more convenient to operate. 3. Current/voltage/5v/0.5A loudspeaker 120 dB three sound effects. 4. There are 3 kinds of taillights. The light efficiency and wireless multi-function horn are suitable for remote control of the flashlight mode through wireless function. 5. USB charging, environmental protection and practical, waterproof structure, stable quality. 6. It also has waterproof design making it ideal for use even in the rain. Specifications: Type:Bike Security Lock Material:Plastic Features:Waterproof,multifunctional,easy to install,wireless Light source:LED COB Power:USB charging Package Included: 1x Taillight 1x Telecontrol 1x Telecontrol mounting bracket 1x Taillight mounting bracket 1x USB cable 1x Gasket 1x Fixed belt 2x Inner hexagona Features: . Bicycle Tail Light Anti-theft alarm in one device, convenient and compact to use; . Comes with two models, with or without remote control for order options; . Big noise sound up to 120DB, clearly audible; . Bright LED chip COB, high illumination, visible at distance; . Built-in Li-polymer battery in lamp, USB rechargeable; . Sturdy built, choice material components, stable performance, durable in use. Specifications: . Light source: LED COB Red Light; . Light Mode: 3 modes ( A6: Fast Strobe, Medium Strobe, Steady ); . Control: Remote control or button switch per order option; . Alarm: Electronic, one sound, up to 120DB max; . Lamp Battery: A6 700mAH,, Li-polymer battery, chargeable; . A6 Controller Battery: 12V/27A battery (included), replaceable, not charge