【Perfect Fit】 Wentokye 21mm rubber strap fits Longines hydro conpuest, fits L3.781.4.96.6/L3.781.4.96.9/L3.742.4.96.6/L3.740.4.96.6/L3.782.4.96.6 L3.782.4.96.9 etc.Most Longines with 41mm/43mm dial diameters can be adapted, please make sure the lugs are 21mm apart before purchasing.Longines has a wide range of model numbers, so if you are not sure if your watch model will fit, please contact us to confirm. 【Material】Natural rubber, flexible, bend at will without deformation, strong durability and performance, comfortable to wear. The clasp is made of 316L steel with brushed surface and polished edge details. 【Size】 Width of interface: 21mm. Total length of strap: 21cm (3cm can be adjusted by cutting) 【Easy Installation】You will get rubber watch band*1+ 3 pieces spring bars +1 remover, you can remove or install watch straps easily. 【Shopping Guarantee】 If you have questions about the suitability of your watch, you can contact us to confirm.Any questions when you get bands please kindly contact us directly, we will reply to you within 24 hours.