Built-in rechargeable battery: Features a 4000mAh rechargeable lithium-ion battery for extended lighting and music playback. Equipped with a USB port to charge devices such as smartphones, tablets, and music players. Artful appearance: Updated patio umbrella light with 48 LEDs and USB interface. Offers white ambient lighting and RGB color-changing modes for versatile illumination. Brighter and more convenient than standard rechargeable umbrella lights. Rechargeable design with USB interface: Integrated power bank securely enclosed in a durable silver ABS shell. Fully charges in approximately 4 hours. Bluetooth speaker: Bluetooth 3.0 technology compatible with most smartphones, tablets, and computers. Enables wireless music streaming from connected devices. Easy installation: Wireless design requires no tools. Includes a self-adjusting power clip for secure attachment to umbrellas (fits diameters from 2cm to 5.2cm) and two hooks for hanging options. Portable and convenient for outdoor use. Portable and durable construction: Made with high-quality plastic housing for lightweight strength. Ideal for outdoor activities including camping, beach outings, barbecues, card games, and garden gatherings. Package includes: 1 x Umbrella light 1 x User manual 1 x USB cable Product dimensions: Approximately 20 x 4.4 cm Light source: 48 LEDs Luminous flux: 240lm Clamp diameter: 2cm to 5.2cm Bluetooth specifications: Version: 3.0 Profiles: HSP, HFP, A2DP, AVRCP Operating range: Up to 10m (32.8ft) Output power: 3W x 2 Frequency response: 20Hz - 20kHz Power bank specifications: Battery: 3.7V 4000mAh Input: DC 5V, 1A Output: DC 5V, 1A Charging time: Approx. 4 hours Operating time: Up to 6 hours (music only), up to 3 hours (music and lights simultaneously)