Model: JY-680 - Color: Black - Plastic housing material - Flash light color: White - Color temperature: 5500K - Guide number: 54/190 (ISO100 in meters/feet focus range 105mm) - Flash coverage: 24~105mm (14mm with wide panel) - Flash duration: 1/1050s - Flash recycling: 0.5~5s - Wireless transmission range: indoor 12~15m/39.4~49.2ft outdoor 8~10m/26.2~32.8ft - Reception angle: 40 degrees (horizontal) / 30 degrees (vertical) - Assist light effective range: 0.6~5m / 2.0~16.4ft - Battery power: 4 x AA batteries (not included) - Power saving after 3min idle operation power-off after 120min idle operation - Package includes: - 1 x Flash Stand - 1 x Protective pouch - 1 x Flash diffuser - 1 x Chinese & English user manual