Buenos dias, Estoy mirando focos ya que quiero salir a entrenar con mas frecuencia y en diario solo puedo hacerlo a horas que ya es de noche. y he visto este foco por 39€ ( de china claro) y no se si comprarlo, pongo la fotas y las especificaciones tecnicas, por si alguien sabe del tema Gracias Features: Made of high quality aluminum alloy, this bike light is sturdy and durable enough for long time daily using. Can be used as Bicycle Light. Vacuum plating cup light surface, anti fall off, concentrating the perfect effect. Aluminum alloy shell, anodizing surface treatment. Switch: End-cap press. Mode: 2 x CREE XM-L U2 LED Strong Light. 2 x CREE XM-L U2 LED Mid Light. 2 x CREE XM-L U2 LED Weak Light. 2 x CREE XM-L U2 LED Strobe Light (Long-press the switch for more than one second to access to Strobe mode). Power Source: 1 x 8.4V 6400mAh rechargeable Battery Pack =4x 18650 Battery. Input: AC 100-240V, 50/60Hz. Output: Voltage DC 8.4V, 1A. Power> 80%, three indicating LEDs are lit on. 50%=< Power =<80%, two indicating LEDs lit on. Runtime=< 30min, just one LED will be lit on and will flash three times one second. With 2 rubber sealing rings for installation: The lamp support fixing on the bicycle with the rubber ring, working as a bicycle lamp. Besides, comes with elastic rubber band with the lamp, it can also working as a headlamp. Multi-purpose, wide application. Ideal item for hiking, camping, bicycle sports and other outdoor activities. Color: Black, Red, Silver, Blue, Brown Light Color: Cool White. Package Content: 1 x 2*CREE XM-L U2 Led Light 2 x Rubber ring for installation 1 x Battery Pack 1 x Holster For Battery Pack 1 x Charger (100-240V) 1 x Adapter as your country Note: A. Charge in a safe place when you were. B. Do not disassemble the battery pack, so as not to affect product performance and safety hazard.