SHANRENRaz Pro Smart Bike Tail Light, Brake Alerts, Auto-Group-Sync Bicycle Tail Light with Light Sensor, Optional Mounts for Seatpost/Saddle/Helmet light, Rechargeable waterproof LED Bike Rear Light

Used 2 other brands before with mix results ( batteries issues) the RAZ seems to hold. The support software is easy to use and with so many options. I have a 2 lights system (saddle and helmet) and feel really safe as car/vans notice when you break.

Love the lights. Was surprised when read the colour can be charged to various colours by quick double press. Also has many different setting to choose from.The style looks great. Now I can colour code my bike & now the tail light can match. Tire band wraps round seat post in a four corner locking securely the light.Not dead out on me yet. Last long. USB charging.

Love the light!

First ride out and after a mile of riding kept changing colour to orange or green. Stopped ride to reset via app then stopped working all together after another few hundred metres.

The light is fine and seems to be working. The issue I have with this is the app that you need to change the settings. It does not log in to the server. Why I need to create and account and log in to change the settings on a light is beyond me. I am not sure I will use the light as I cannot change the settings.

I was seduced by the sync features and helmet mount and although yes they are good, they aren't great and don't reflect the glossy videos and overall promise.The first thing you feel when you open the box is cheapness. Materials are cheap and inspire no confidence this will last for long and thats the worst thing you want on a light that is going to be behind you and out of your sight when you're riding. Its not that bright and for the £30 I paid for it I can get much better, brighter and hardier lights from brands that I trust more than this.Real shame as I wanted this to be great. Returned for refund instantly.

buena duracion ,la llevo como segunda luz en el casco ya que tampoco es la mas potente sobre todo de dia.

Bel prodotto .... istruzioni non in lingua italiana....Un po’ da capire come funziona....

Sencilla de configurar, el encenderla una vez y olvidarte de ella durante 2 semanas es una gozada (se enciende y apaga sola si la configuras para ello a través del movimiento o falta del mismo )La única pega es el sensor de luz ambiente, funciona y hace lo que promete. Se enciende o apaga según la luz pero la calibración no es buena, se enciende cuando la luz aflojó demasiado, sería bueno que encendiera con algo más de luz por lo que no uso esta función

Luce a led per bicicletta/casco perfetta. In confezione si trova il caricabatterie proprietario magnetico, l'attacco da reggisella, l'attacco per il casco. La luce è dotata di un unico tasto per accenderla/spegnerla e per cambiare la modalità. Usando il telefono e la connessione bluetooth, si può personalizzare il colore della luce, le modalità di funzionamento attive, i vari avvisi come quello di un ostacolo, il rilevamento di frenata, la team sync. Infine, l'app ci visualizza anche la carica della luce rimanente.4 stelle invece che 5 a causa dell'app che nonostante abbia molte funzionalità non è super ottimizzata e molto stabile.

Buena iluminación