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1) memory unit:Built-in hi li-ion rechargeable 150mah/3.7v battery2) port:4 pin USB round port3) battery life:More than 9 hours continuous playing time when fully charged4) USB transmission rate:USB 1.1(maximum 5mbps)5) MP3 compression rate:32kbps to 256 kbps6) output frequency rate:20hz to 20khz7) earphone output:4mw+4mw(16)8) operating platform:Windows98/me/nt/2000/XP/mac 8.6 or above9) product origin: China10) payment terms: T/t11) supply ability:200,000pcs/month12) minimum order:100pcs13) delivery lead time:14daysOur new hi-tech watch products in 2001: Powerdisk USB flash memory and superdisk MP3 watch are equipped with advance mobile storage technology and equipped with all standard features of traditional watches. Powerdisk USB watch and superdisk MP3 watch have been patentd in p. R China, Hong kong, Germany and Japan, and patent pending in USA.