Internal
WTTX160633B
470MHz, internal spring antenna
WTTX160243B
433MHz, internal spring antenna
WTTX160691B
800MHz, internal PCB antenna, MMCX(M)
WTTX180675B
850~925MHZ/1885~1915MHz, internal copper tube antenna, I-PEX connector
WTTX180371B
6.5GHz, internal positioning antenna
WTTX180551B
460MHz, internal spring antenna
WTTX160748B
6.25~6.75GHz, internal PCB antenna，IV-generation I-PEX connector
