Bluetooth Version: VER 5.0 Bluetooth Reception Distance: ≤10m/32.8ft Minimum Operating Voltage: 3.4V External Input Voltage: Direct Current: DC5V Built In Lithium Battery: BL5C Lithium Battery: 3.7V 1000mAh (Include） Maximum Memory Card Capacity: 256G(Not Include) Package List: 1 x Radio Music Player 1 x Lifting Rope 1 x Charging Line 1 x Lifting Rope Specification: Item Type: Radio Music Player Material: ABS Receive Range: MW:522-1620KHZ(Medium Wave Step Value 9KHZ） 520-1710KHz(Medium Wave Step Value 10KHZ) FM: 87-108MHZ/SW:5.70-17.90MHZ/WB:162.400-162.550MHZ Receive Sensitivity:FM:≤8dB/MW≤86dB/SW≤32dB Quiescent Current: ≤60uA Maximum Current: ≤650MA Speaker: 4Ω/3W SNR:FM:≥40dB/MW:≥30dB/SW >40dB Loud Sound: The radio music player has square level volume, rocking the house. Using diaphragm horn, 3W power, volume over 120 decibels. Stable Transmission: Wireless bluetooth connection, wide range of stable transmission. Bluetooth version 5.0, up to 10m/32.8ft stable connection range. Multifunction: The radio CD player support memory card playback, support full band broadcast reception, support NOAA weather forecast. Maximum Memory Card Capacity: 256G(Not Include) Long Battery Life: This multimedia music player built in 1000mah large capacity lithium battery. Improved battery life. Compact Size: The digital radio is small size, flexible and portable. It's easy to take with you when you travel. The perfect gift This mini radio is perfect as a holiday gift for friends, family and the elderly. Only the size of the palm of your hand, it is a great friend for seniors as it shares happiness anytime and anywhere.