Aputure Accent B7c; smart 7W RGBWW LED bulb; uses the same colour mixing technology as the Nova P300c, covering the same colour temperature spectrum from 2000 to 10000 Kelvin; built-in Li-Po battery with a runtime of up to 70 minutes at maximum luminosity; On-board control buttons, for changing CCT presets and adjusting brightness; compatible with Sidus Link Bluetooth app for controlling with a smartphone or iPad; wireless Bluetooth control up to 80 m; infinitely dimmable from 0 - 100 % without colour shift; nine built-in lighting effects: Paparazzi, Fireworks, Faulty Bulb, Lightning, TV, Party, Pulsing, Cop Car and Fire; standard E26/E27 bulb socket; two power supply options: Standard/AC Mode, Battery/DC Mode; passive cooling (heat dissipation via aluminium alloy); Techn. Data:; colour temperature: 2000 K - 10000 K; CRI: 95+ (2500 ~ 10000 K); TLCI: 96+ (2500 ~ 10000 K); CQS: 95+; SSI (Tungsten): 85; SSI (D55): 74; lumens: 570; operating voltage: 100 - 240 V; max. power consumption: 9 W; lithium battery. Power consumption: 9 W; Lithium-polymer battery: 1300 mAh; 7.4 V; Charging time: 2 hours (in standby or switched off); Diameter of lamp body: 118 mm; Weight: 240 g